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Welcome to Docker Desktop! The Docker Desktop for Mac user manual provides information on how to configure and manage your Docker Desktop settings.

For information about Docker Desktop download, system requirements, and installation instructions, see Install Docker Desktop.

Preferences

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In response to a report earlier this week pointing out that many of the applications in early builds of Mac OS X 10.6 Snow Leopard are dramatically smaller in size, a number of developers have. Shrinking disks is not allowed under the following circumstances: The virtual machine is hosted on an ESX/ESXi host. ESX/ESXi can shrink the size of a virtual disk only when a virtual machine is exported. The space occupied by the virtual disk on the server, however, does not change. The virtual machine has a Mac OS X guest operating system. One Response to “Shrinking and Expanding Selections in Mac OS X (continued)” On Anchored Selections in Windows, Gnome, and Mac OS X says: May 4th, 2009 at May 04, 09 5:52 am Update: Pierre published a follow-up.

The Docker Preferences menu allows you to configure your Docker settings such as installation, updates, version channels, Docker Hub login,and more.

Choose the Docker menu > Preferences from themenu bar and configure the runtime options described below.

General

On the General tab, you can configure when to start and update Docker:

• Automatically check for updates: By default, Docker Desktop is configured to check for newer versions automatically. If you have installed Docker Desktop as part of an organization, you may not be able to update Docker Desktop yourself. In that case, upgrade your existing organization to a Team plan and clear this checkbox to disable the automatic check for updates.

• Start Docker Desktop when you log in: Automatically starts Docker Desktop when you open your session.

• Include VM in Time Machine backups: Select this option to back up the Docker Desktop virtual machine. This option is disabled by default.

• Use gRPC FUSE for file sharing: Clear this checkbox to use the legacy osxfs file sharing instead.

• Send usage statistics: Docker Desktop sends diagnostics, crash reports, and usage data. This information helps Docker improve and troubleshoot the application. Clear the check box to opt out.

• Show weekly tips: Displays useful advice and suggestions about using Docker.

• Open Docker Desktop dashboard at startup: Automatically opens the dashboard when starting Docker Desktop.

Resources

The Resources tab allows you to configure CPU, memory, disk, proxies, network, and other resources.

Advanced

On the Advanced tab, you can limit resources available to Docker.

Advanced settings are:

• CPUs: By default, Docker Desktop is set to use half the number of processorsavailable on the host machine. To increase processing power, set this to ahigher number; to decrease, lower the number.

• Memory: By default, Docker Desktop is set to use 2 GB runtime memory,allocated from the total available memory on your Mac. To increase the RAM, set this to a higher number. To decrease it, lower the number.

• Swap: Configure swap file size as needed. The default is 1 GB.

• Disk image size: Specify the size of the disk image.

• Disk image location: Specify the location of the Linux volume where containers and images are stored.

You can also move the disk image to a different location. If you attempt to move a disk image to a location that already has one, you get a prompt asking if you want to use the existing image or replace it.

File sharing

Use File sharing to allow local directories on the Mac to be shared with Linux containers.This is especially useful forediting source code in an IDE on the host while running and testing the code in a container.By default the /Users, /Volume, /private, /tmp and /var/folders directory are shared. If your project is outside this directory then it must be addedto the list. Otherwise you may get Mounts denied or cannot start service errors at runtime.

File share settings are:

• Add a Directory: Click + and navigate to the directory you want to add.

• Apply & Restart makes the directory available to containers using Docker’sbind mount (-v) feature.

Tips on shared folders, permissions, and volume mounts

• Share only the directories that you need with the container. File sharing introduces overhead as any changes to the files on the host need to be notified to the Linux VM. Sharing too many files can lead to high CPU load and slow filesystem performance.

• Shared folders are designed to allow application code to be edited on the host while being executed in containers. For non-code items such as cache directories or databases, the performance will be much better if they are stored in the Linux VM, using a data volume (named volume) or data container.

• If you share the whole of your home directory into a container, MacOS may prompt you to give Docker access to personal areas of your home directory such as your Reminders or Downloads.

• By default, Mac file systems are case-insensitive while Linux is case-sensitive. On Linux, it is possible to create 2 separate files: test and Test, while on Mac these filenames would actually refer to the same underlying file. This can lead to problems where an app works correctly on a Mac (where the file contents are shared) but fails when run in Linux in production (where the file contents are distinct). To avoid this, Docker Desktop insists that all shared files are accessed as their original case. Therefore, if a file is created called test, it must be opened as test. Attempts to open Test will fail with the error No such file or directory. Similarly, once a file called test is created, attempts to create a second file called Test will fail. For more information, see Volume mounting requires file sharing for any project directories outside of /Users.)

Proxies

Docker Desktop detects HTTP/HTTPS Proxy Settings from macOS and automaticallypropagates these to Docker. For example, if you set yourproxy settings to http://proxy.example.com, Docker uses this proxy whenpulling containers.

Your proxy settings, however, will not be propagated into the containers you start.If you wish to set the proxy settings for your containers, you need to defineenvironment variables for them, just like you would do on Linux, for example:

For more information on setting environment variables for running containers,see Set environment variables.

Network

You can configure Docker Desktop networking to work on a virtual private network (VPN). Specify a network address translation (NAT) prefix and subnet mask to enable Internet connectivity.

Docker Engine

The Docker Engine page allows you to configure the Docker daemon to determine how your containers run.

Type a JSON configuration file in the box to configure the daemon settings. For a full list of options, see the Docker Enginedockerd commandline reference.

Click Apply & Restart to save your settings and restart Docker Desktop.

Command Line

On the Command Line page, you can specify whether or not to enable experimental features.

Experimental features provide early access to future product functionality.These features are intended for testing and feedback only as they may changebetween releases without warning or can be removed entirely from a futurerelease. Experimental features must not be used in production environments.Docker does not offer support for experimental features.

For a list of current experimental features in the Docker CLI, see Docker CLI Experimental features.

You can toggle the experimental features on and off in Docker Desktop. If you toggle the experimental features off, Docker Desktop uses the current generally available release of Docker Engine.

You can see whether you are running experimental mode at the command line. IfExperimental is true, then Docker is running in experimental mode, as shownhere. (If false, Experimental mode is off.)

Kubernetes

Docker Desktop includes a standalone Kubernetes server that runs on your Mac, sothat you can test deploying your Docker workloads on Kubernetes. To enable Kubernetes support and install a standalone instance of Kubernetes running as a Docker container, select Enable Kubernetes.

For more information about using the Kubernetes integration with Docker Desktop, see Deploy on Kubernetes.

Reset

Reset and Restart options

On Docker Desktop Mac, the Restart Docker Desktop, Reset to factory defaults, and other reset options are available from the Troubleshoot menu.

For information about the reset options, see Logs and Troubleshooting.

Dashboard

The Docker Desktop Dashboard enables you to interact with containers and applications and manage the lifecycle of your applications directly from your machine. The Dashboard UI shows all running, stopped, and started containers with their state. It provides an intuitive interface to perform common actions to inspect and manage containers and existing Docker Compose applications. For more information, see Docker Desktop Dashboard.

Add TLS certificates

You can add trusted Certificate Authorities (CAs) (used to verify registryserver certificates) and client certificates (used to authenticate toregistries) to your Docker daemon.

Add custom CA certificates (server side)

All trusted CAs (root or intermediate) are supported. Docker Desktop creates acertificate bundle of all user-trusted CAs based on the Mac Keychain, andappends it to Moby trusted certificates. So if an enterprise SSL certificate istrusted by the user on the host, it is trusted by Docker Desktop.

To manually add a custom, self-signed certificate, start by adding thecertificate to the macOS keychain, which is picked up by Docker Desktop. Here isan example:

Or, if you prefer to add the certificate to your own local keychain only (ratherthan for all users), run this command instead:

See also, Directory structures forcertificates.

Note: You need to restart Docker Desktop after making any changes to thekeychain or to the ~/.docker/certs.d directory in order for the changes totake effect.

For a complete explanation of how to do this, see the blog post AddingSelf-signed Registry Certs to Docker & Docker Desktop forMac.

Add client certificates

You can put your client certificates in~/.docker/certs.d/<MyRegistry>:<Port>/client.cert and~/.docker/certs.d/<MyRegistry>:<Port>/client.key.

When the Docker Desktop application starts, it copies the ~/.docker/certs.dfolder on your Mac to the /etc/docker/certs.d directory on Moby (the DockerDesktop xhyve virtual machine).

• You need to restart Docker Desktop after making any changes to the keychainor to the ~/.docker/certs.d directory in order for the changes to takeeffect.

• The registry cannot be listed as an insecure registry (see DockerEngine. Docker Desktop ignores certificates listedunder insecure registries, and does not send client certificates. Commandslike docker run that attempt to pull from the registry produce errormessages on the command line, as well as on the registry.

Directory structures for certificates

If you have this directory structure, you do not need to manually add the CAcertificate to your Mac OS system login:

The following further illustrates and explains a configuration with customcertificates:

You can also have this directory structure, as long as the CA certificate isalso in your keychain.

To learn more about how to install a CA root certificate for the registry andhow to set the client TLS certificate for verification, seeVerify repository client with certificatesin the Docker Engine topics.

Install shell completion

Docker Desktop comes with scripts to enable completion for the docker and docker-compose commands. The completion scripts may befound inside Docker.app, in the Contents/Resources/etc/ directory and can beinstalled both in Bash and Zsh.

Bash

Bash has built-in support forcompletion To activate completion for Docker commands, these files need to becopied or symlinked to your bash_completion.d/ directory. For example, if youinstalled bash via Homebrew:

Add the following to your ~/.bash_profile:

OR

Zsh

In Zsh, the completionsystemtakes care of things. To activate completion for Docker commands,these files need to be copied or symlinked to your Zsh site-functions/directory. For example, if you installed Zsh via Homebrew:

Fish-Shell

Fish-shell also supports tab completion completionsystem. To activate completion for Docker commands,these files need to be copied or symlinked to your Fish-shell completions/directory.

Create the completions directory:

Now add fish completions from docker.

Give feedback and get help

To get help from the community, review current user topics, join or start adiscussion, log on to our Docker Desktop for Macforum.

To report bugs or problems, log on to Docker Desktop for Mac issues onGitHub,where you can review community reported issues, and file new ones. SeeLogs and Troubleshooting for more details.

For information about providing feedback on the documentation or update it yourself, see Contribute to documentation.

Docker Hub

Select Sign in /Create Docker ID from the Docker Desktop menu to access your Docker Hub account. Once logged in, you can access your Docker Hub repositories and organizations directly from the Docker Desktop menu.

For more information, refer to the following Docker Hub topics:

Two-factor authentication

Docker Desktop enables you to sign into Docker Hub using two-factor authentication. Two-factor authentication provides an extra layer of security when accessing your Docker Hub account.

You must enable two-factor authentication in Docker Hub before signing into your Docker Hub account through Docker Desktop. For instructions, see Enable two-factor authentication for Docker Hub.

After you have enabled two-factor authentication:

1. Go to the Docker Desktop menu and then select Sign in / Create Docker ID.

2. Enter your Docker ID and password and click Sign in.

3. After you have successfully signed in, Docker Desktop prompts you to enter the authentication code. Enter the six-digit code from your phone and then click Verify.

After you have successfully authenticated, you can access your organizations and repositories directly from the Docker Desktop menu.

Where to go next

• Try out the walkthrough at Get Started.

• Dig in deeper with Docker Labs examplewalkthroughs and source code.

• For a summary of Docker command line interface (CLI) commands, seeDocker CLI Reference Guide.

• Check out the blog post, What’s New in Docker 17.06 Community Edition(CE).

Shrinking Universe Mac Os Catalina

I love Apple products. But something has been troubling me…

People have been calling me and my kind Apple Fanboys for many years. Before that term was trendy they called us Apple fanatics. I used to resist these labels since from my point of view I was just reporting the obviousness between Macs and PCs. It wasn’t my fault Apple products were superior.

Anyway this isn’t about who’s better or who’s right . That’s old news. Apple is kicking butt these days and most of the anti-Apple people I’ve known have finally let go of their irrational embrace of a Windows PC-only paradigm, bought iPhones, iPods, iPads and iMacs and we can finally move on.

And my story starts there.

Because as any true Apple Fanboy will tell you, it feels oddly disorienting to see Apple kicking butt . Yeah, it’s what we fought for over the last quarter century, and yet now that we have arrived, the universe is out of balance, only perhaps not in the way you might expect…

iTudes

The other day I was ordering a bound photo album I made in iPhoto. The fastest shipping option I saw was still going to take too long, so I went in search of a more expensive overnight shipping option. I didn’t find mention of such an option, so I called the Apple Web Store Support line – since they would know about shipping Apple’s products. The first sales person I talked to naturally sounded cool – like a “Mac”. When I asked if I could overnight the shipping of my iPhoto Album, after it was printed, the line went dead. I was on my iPhone so figured AT&T’s connection dropped. I called back on a landline and this time got another cool-sounding “Mac”. Once again I asked about paying more money for an overnight shipping option, and this time I think the “Mac” mumbled: “Oh we ble…” he trailed off unintelligibly and the line went dead again. This time it was clear – he hung up. In my ear. Mid-mumbled-sentance.

And that’s how I learned, or intuited rather, that buying Apple products online through iPhoto is unrelated to say, buying iPhoto itself.

Thus started my troubling, mulling and stewing. Obviously, I shouldn’t have taken being hung up on twice by Apple representatives personally. There is obviously a rational explanation. And yet I did take it personally.

“Made in California”

An important part of Apple’s brand is it’s personality, embodied by a slightly cooler than you, slightly smug, rather naturally stylish Californian called “Mac” (and this was true decades before any commercials featuring Justin Long were deployed). And if you’re Apple, you’d recognize it would undermine your brand personality if US consumers dialed the Apple Store and were directed to random, heavily-accented operators in India who sounded like they had been hired by the floor-full, to save a few bucks. No, you would hire considerably more expensive, self-entitled, young Californian-sounding American College Students and you would save the money back by issuing a punishable edict that directed all “Macs” (operators) to move through those calls as ungodly fast as possible – even if it meant outright hanging up in the ear of some dumb customer who didn’t figure out that the information vacuum surrounding Overnight Shipping for iPhoto Products meant Apple doesn’t do that. Click – “Sorry, application ‘telephone call’ unexpectedly quit”.

Little Dog

Apple has always had a little dog attitude. You know- the way a Jack Russell will act all self-important, and snarl and snap like he’s all that. He has to do that because he’s so small and powerless. Otherwise he would be eaten. That was Apple for it’s first 20 years. But like me, maybe you have wondered what you would do if your Jack Russell Freaky Friday’ed into the body of a Great Dane or a Rottweiler. There is no room in our civilization for such a vicious K9, and Animal Control would probably put it down.

Well Apple has grown. And by grown I mean it has inserted itself into the body of a Microsoft, a gigantic swath of the population with iPhones, iPods and now trailing, Mac computers. Apple is enjoying more users than ever before in its history. You might argue that in areas, Apple has become a big dog. The problem, and the reason I currently think I would prefer Google own the digital universe despite their utter lack of aesthetic sensibility, is that Apple still carries itself like a small dog. Utterly arrogant, overly aggressive; a little dictator.

It was cute when the company had no power, it was necessary, endearing even. But now that so many lives are intertwined with that personality, now that a virtual ecosystem has begun to build itself around the company and its behavior, Apple’s personality needs an adjustment; the arrogance, once an asset, has turned destructive.

Knights of the Apple Table

If you spend any time in the Apple Discussion boards you have come across a recurring comment convention. Some aspect of Apple’s service or products pisses a customer off and by way of expressing the injustice, the customer will start by listing, in detail, all the Apple products he has owned over so many years; a precious few can even assert that they owned the first Macintosh Computer in 1984. As if such credentials should entitle them to some premier frequent flier status.
I used to laugh at those people – how lame, I thought, this is a company – you just buy their products or you don’t. Apple doesn’t owe you any more than that. The number of products you willfully purchased is a meaningless datapoint with regard to the little issue you are upset about now.

…and yet… I have begun to understand why they felt that way. Why some of them intuitively felt that Apple owed them a little bit more, perhaps more than all these new, fair-weather, iPod-gateway, converts. Why being shuttled through the same long cues and dismissiveness, as everyone else felt unjust. And why, after some real soul-searching – I now sincerely feel that way too.

Apple does owe us. Some of us. For we are the loyal minority. The long-timers. The knights of the Apple table. They owe us because we were the kids who fought off the countless bullies on Apple’s behalf at a time that Apple was weakest. We were Apple’s first line of defense. The ones who tucked our precious Mac OS under our arms and carried it away from threat of disaster. We protected it.

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We defended Apple’s honor against an inescapable and humiliating tidal wave of proof that Apple was the weakling of the personal computing party.

We fought these countless adversaries with the most valuable weapon of all:

Our own credibility. Because Apple carried so precious little then.

To keep the company alive – in effort of defending the unacknowledged rightness of Apple’s mission, we put our very faces and reputations on the line in defense of an ideal that had not managed to manifest a meaningful footprint. Apple was weak, it faltered, it was shrinking to toy-like proportions, so as far as anyone knew at the time our assertive actions were reckless, self-destructive and ultimately doomed. But through it all – we fanned the Apple embers tirelessly.

These were the darkest years. Seriously, Gil Amelio? Really? It took a level of courage and self-confidence to be an Apple supporter then.

My minuscule part in this legend was as the creative head of a highly-awarded Interactive firm at that time, and there was not one technologist, IT executive, or engineer who thought we should have a Mac in the shop. Like vultures they circled, “Apple is about to fold, Photoshop runs on Windows now, we need to move to PCs now”; it was their repeated and logical assertion. It became an IT mantra. And yet we fought. My business partner and I, against the obviousness, we fought. So my company bought more ugly beige boxes from Gil because “Damnit,” I said, “the OS is BETTER. And I believe in their rightness. They’ll come back.” Obviously I had no clue Apple could come back – just a deeply wishful belief in the justice of it all.

And I wasn’t the only one. There were more of us. A well-documented, miniscule percentage of the personal computing population – we evangelized, consistently, passionately, angrily even – to the near-death of our professional relationships.

Frequent i-er Program

Apple’s Steve Jobs died and was reborn to rule once more.

Could this have been possible had the believers ceased believing? I don’t think so. When I recall the relative viscousness of our fight, no, I don’t think so.

So I stand before you today, Apple, with the scars, and sacrifice that you survived long enough to rise to new power upon, and I ask you to remember. Not to forget us.

Maybe… maybe you do owe those few something after all? Those few who stayed with you from the 80s onward? It wouldn’t take much.

You could acknowledge our greater-than-mere-consumerism sacrifice by instituting a literal premier customer status that it takes years to acquire. A good friend of mine, had a simple suggestion: Lifetime Applecare.

Or maybe we just need you to grow up. Go the extra distance and show us all how such a great company – who survived thanks to a relative few fighting proponents – can mature gracefully. Lose the little dog attitude, and for Christ sake – respect your evangelists. Find out who you’re talking to before you treat them like annoyances. I know you think “Hey – this is awesome, look at all the new customers we have now!” But look more closely and you won’t see any evangelism in that body of new users. You’ll just see users. Uninvested users who follow trends. And that’s great, so long as you remain the trend.

Similarly, when you lose your loyal soldiers, the lifers – you’ll have another problem. A population of trained, outspoken digerati who know your strengths and weaknesses intimately and who share a new mission. Look at this post. It’s the inevitable byproduct of such a scenario. And a pretty mild one at this point.

Now that you are strong, it wouldn’t take a lot to get me back. But I… we, are not like the rest of your new customers.

We had an income in 1984. We bought every OS you have ever released and more hardware than some companies do.

The people who call us ‘Fanboys’, who lump us in with this iPod generation of trenders, totally miss the point.

We are not Fanboys.

We are the proud Apple Freemasons, and membership has been closed for a long time.

Apple Freemason Medals of Service

I started with a Macintosh Computer in 1985. I bought half a dozen beige boxes with names like Performa, LC, and Quadra. I bought a Duo. I bought the first iMac (bondi blue). And the second iMac (blueberry). I bought three Powerbooks. I bought the Cube. I loved my Cube. I bought another iMac (AV graphite). I bought two G3 towers(beige and blue), and two G4 towers. I bought several tube Monitors, and on the day it was available bought a 20″ flat Cinema Screen and then the 23″ Cinema Screen. I bought the first iBook. Naturally I bought the first G5 Tower, and then another faster G5. I bought two MacBooks (one white, one black), and I bought the first 30″ cinema screen (with the necessary video card upgrade). I bought an iSight webcam. I bought the first iPod with mechanical spinning click-wheel and surrounding buttons, the iPod with four red glowy buttons, The first iPod Mini, the first Nano (still the best iPod design), and the clip-on Shuffle. I bought the first iPhone, the iPhone 3G, the 3GS, and now 4. I bought the first Airport Base Station. The first Airport Extreme. Numerous Airport Express bricks. The new Airport Extreme 802.11n. And I bought a coveted AppleTV. I recently bought a spanking new Nehalem MacPro Tower. I bought a new 15″ MacBook Pro and an iPad.

I bought every Mac OS ever released. Every version of iLife and iWork. I bought Final Cut. I bought all manner of Apple adapter and cable and battery and mouse and keyboard in multiples. Apple, you kind of made me buy those adapters.

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I have spent untally-able dollars at the iTunes Store on music, movies, TV shows, apps and books, as well as photobooks and cards through iPhoto (minus overnight shipping). I have been a dual-account holder of mac.com since it was launched (boasting Virex!), and maintain two Apple developer accounts.

I didn’t buy the iPod Hi-Fi. Sorry, that was the stupidest product I have ever seen. For a while I tried to pretend like I never saw it. So I guess I saved $349 there.

By my rough estimation, I have personally purchased well in excess of $70,000 of Apple products.

I additionally was directly responsible for ensuring that Apple products remained the dominant tools in my company of 550 people for the worst decade of Apple’s lifespan to date.

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And this is just what I remember.

During the same period, I purchased maybe 4 versions of Microsoft Office.

You too? Welcome to the Apple Freemasons.

Shrinking Universe Mac OS