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Get started with Docker Desktop for Mac Estimated reading time: 16 minutes Welcome to Docker Desktop for Mac! Docker is a full development platform for creating containerized apps, and Docker Desktop for Mac is the best way to get started with Docker on a Mac. See for information on system requirements and stable & edge channels. Check versions Ensure your versions of docker, docker-compose, and docker-machine are up-to-date and compatible with Docker.app. Your output may differ if you are running different versions. $ docker run hello-world Unable to find image 'hello-world:latest' locally latest: Pulling from library/hello-world ca4f61b1923c: Pull complete Digest: sha256:ca0eeb6fb05351dfc8759c20733c91def84cb8007aa89a5bf606bc8b315b9fc7 Status: Downloaded newer image for hello-world:latest Hello from Docker!
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This message shows that your installation appears to be working correctly. Start a Dockerized web server. Like the hello-world image above, if the image is not found locally, Docker pulls it from Docker Hub. $ docker run -detach -publish =80:80 -name =webserver nginx. In a web browser, go to to view the nginx homepage. Because we specified the default HTTP port, it isn’t necessary to append:80 at the end of the URL. Early beta releases used docker as the hostname to build the URL.
Now, ports are exposed on the private IP addresses of the VM and forwarded to localhost with no other host name set. View the details on the container while your web server is running (with docker container ls or docker ps): $ docker container ls CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 90 nginx 'nginx -g 'daemon off' About a minute ago Up About a minute 0.0.0.0:80-80/tcp, 443/tcp webserver. Stop and remove containers and images with the following commands.
Use the “all” flag ( -all or -a) to view stopped containers. $ docker container ls $ docker container stop webserver $ docker container ls -a $ docker container rm webserver $ docker image ls $ docker image rm nginx Preferences menu Choose → Preferences from the menu bar and configure the runtime options described below. General General settings are:. Start Docker when you log in: Uncheck this option if you don’t want Docker to start when you open your session. Automatically check for updates notifies you when an update is available. Click OK to accept and install updates (or cancel to keep the current version).
If you disable this option, you can still find out about updates manually by choosing → Check for Updates. Include VM in Time Machine backups backs up the Docker Desktop for Mac virtual machine.
(Disabled by default.). Securely store Docker logins in MacOS keychain stores your Docker login credentials. (Enabled by default.). Send usage statistics — Send diagnostics, crash reports, and usage data to Docker. This information helps Docker improve the application and get more context for troubleshooting problems. (Enabled by default.) File sharing Choose which local directories to share with your containers.
At build time, Xcode builds your framework and puts the results in the build directory. Before the application can use the framework, however, you must configure the application target as follows: You need to copy the framework into the application’s bundle. If --installed is passed, output a tree for every installed formula. See the docs for examples of using the JSON output: session with access to IRB or a shell inside the temporary build directory. But generally it should notify the user if something is wrong with the installed formula. Deploying Mac OS X with NetInstall & NetRestore By Scott Doenges. Mac OS X Server 10.2. (using CCC, etc. – see ASR documentation) • Create a NetInstall image from the Mac OS X Server CD using the Network Image Utility, and use NetRestore Helper to modify it.
File sharing is required for volume mounting if the project lives outside of the /Users directory. In that case, share the drive where the Dockerfile and volume are located. Otherwise, you get file not found 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’s bind mount ( -v) feature. There are some limitations on the directories that can be shared:. They cannot be a subdirectory of an already shared directory. They cannot already exist inside of Docker. For more information, see:. in the topic on.) Advanced On the Advanced tab, you can limit resources available to Docker. Advanced settings are: CPUs: By default, Docker Desktop for Mac is set to use half the number of processors available on the host machine.
To increase processing power, set this to a higher number; to decrease, lower the number. Memory: By default, Docker Desktop for Mac is set to use 2 GB runtime memory, allocated from the total available memory on your Mac. To increase 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 Specify the Disk image location of the Linux volume, where containers and images are stored. You can also move the disk image location.
If you attempt to move the 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. Proxies Docker Desktop for Mac detects HTTP/HTTPS Proxy Settings from macOS and automatically propagates these to Docker and to your containers. For example, if you set your proxy settings to Docker uses this proxy when pulling containers. When you start a container, your proxy settings propagate into the containers.
$ docker run -it alpine env PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin HOSTNAME=b7edf988b2b5 TERM=xterm HOME=/root HTTPPROXY=httpproxy=noproxy=.local, 169.254/16 You can see from the above output that the HTTPPROXY, httpproxy, and noproxy environment variables are set. When your proxy configuration changes, Docker restarts automatically to pick up the new settings.
If you have containers that you wish to keep running across restarts, you should consider using. Daemon You can configure options on the Docker daemon that determine how your containers run. Select Basic to configure the daemon with interactive settings, or select Advanced to edit the JSON directly. Experimental features Both Docker Desktop for Mac Stable and Edge releases have experimental features enabled on Docker Engine, as described.
If you uncheck experimental mode, Docker Desktop for Mac uses the current generally available release of Docker Engine. Don’t enable experimental features in production Experimental features are not appropriate for production environments or workloads. They are meant to be sandbox experiments for new ideas. Some experimental features may become incorporated into upcoming stable releases, but others may be modified or pulled from subsequent Edge releases, and never released on Stable.
You can see whether you are running experimental mode at the command line. If Experimental is true, then Docker is running in experimental mode, as shown here. (If false, Experimental mode is off.). $ kubectl config get-contexts $ kubectl config use-context docker-for-desktop If you installed kubectl with Homebrew, or by some other method, and experience conflicts, remove /usr/local/bin/kubectl. To enable Kubernetes support and install a standalone instance of Kubernetes running as a Docker container, select Enable Kubernetes, choose the and click the Apply button. An Internet connection is required.
Images required to run the Kubernetes server are downloaded and instantiated as containers, and the /usr/local/bin/kubectl command is installed on your Mac. When Kubernetes is enabled and running, an additional status bar item displays at the bottom right of the Docker Desktop for Mac Preferences dialog. The status of Kubernetes shows in the Docker menu and the context points to docker-for-desktop.
By default, Kubernetes containers are hidden from commands like docker service ls, because managing them manually is not supported. To make them visible, select Show system containers (advanced) and click Apply and restart.
Most users do not need this option. To disable Kubernetes support at any time, deselect Enable Kubernetes. The Kubernetes containers are stopped and removed, and the /usr/local/bin/kubectl command is removed. For more about using the Kubernetes integration with Docker Desktop for Mac, see. Reset Select - Preferences from the menu bar, then click Reset to reset factory defaults, restart the Docker daemon, or uninstall. Reset settings are:.
Restart - Select to restart the Docker daemon. Remove all data - This option removes/resets all Docker data without a reset to factory defaults (which would cause you to lose settings). Reset to factory defaults - Choose this option to reset all options on Docker Desktop for Mac to its initial state, the same as when it was first installed. Uninstall - Choose this option to remove Docker Desktop for Mac from your system.
Uninstall Docker Desktop for Mac from the commandline To uninstall Docker from Mac from a terminal, run: -uninstall. If your instance is installed in the default location, this command provides a clean uninstall. $ /Applications/Docker.app/Contents/MacOS/Docker -uninstall Docker is running, exiting. Docker uninstalled successfully.
You can move the Docker application to the trash. You might want to use the command-line uninstall if, for example, you find that the app is non-functional, and you cannot uninstall it from the menu. Add TLS certificates You can add trusted Certificate Authorities (CAs) (used to verify registry server certificates) and client certificates (used to authenticate to registries) to your Docker daemon. Add custom CA certificates (server side) All trusted CAs (root or intermediate) are supported. Docker Desktop for Mac creates a certificate bundle of all user-trusted CAs based on the Mac Keychain, and appends it to Moby trusted certificates.
So if an enterprise SSL certificate is trusted by the user on the host, it is trusted by Docker Desktop for Mac. To manually add a custom, self-signed certificate, start by adding the certificate to the macOS keychain, which is picked up by Docker Desktop for Mac. Here is an example. $ security add-trusted-cert -d -r trustRoot -k /Library/Keychains/login.keychain ca.crt See also,. Note: You need to restart Docker Desktop for Mac after making any changes to the keychain or to the /.docker/certs.d directory in order for the changes to take effect. For a complete explanation of how to do this, see the blog post.
Add client certificates You can put your client certificates in /.docker/certs.d/:/client.cert and /.docker/certs.d/:/client.key. When the Docker Desktop for Mac application starts up, it copies the /.docker/certs.d folder on your Mac to the /etc/docker/certs.d directory on Moby (the Docker for Mac xhyve virtual machine). You need to restart Docker Desktop for Mac after making any changes to the keychain or to the /.docker/certs.d directory in order for the changes to take effect. The registry cannot be listed as an insecure registry (see ). Docker Desktop for Mac ignores certificates listed under insecure registries, and does not send client certificates. Commands like docker run that attempt to pull from the registry produce error messages 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 CA certificate to your Mac OS system login. /Users//.docker/certs.d/ └──: ├── client.cert └── client.key To learn more about how to install a CA root certificate for the registry and how to set the client TLS certificate for verification, see in the Docker Engine topics. Install shell completion Docker Desktop for Mac comes with scripts to enable completion for the docker, docker-machine, and docker-compose commands. The completion scripts may be found inside Docker.app, in the Contents/Resources/etc/ directory and can be installed both in Bash and Zsh. Bash Bash has To activate completion for Docker commands, these files need to be copied or symlinked to your bashcompletion.d/ directory.
For example, if you installed bash via. Etc =/Applications/Docker.app/Contents/Resources/etc ln -s $etc/docker.zsh-completion /usr/local/share/zsh/site-functions/docker ln -s $etc/docker-machine.zsh-completion /usr/local/share/zsh/site-functions/docker-machine ln -s $etc/docker-compose.zsh-completion /usr/local/share/zsh/site-functions/docker-compose Give feedback and get help To get help from the community, review current user topics, join or start a discussion, log on to our. To report bugs or problems, log on to, where you can review community reported issues, and file new ones. See for more details.
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To give us feedback on the documentation or update it yourself, use the Feedback options at the bottom of each docs page. Docker Hub You can access your account from within Docker Desktop for Mac.
From the Docker Desktop for Mac menu, sign in to Docker Hub with your Docker ID, or create one. Then use the Docker Desktop for Mac menu to create, view, or navigate directly to your Cloud resources, including organizations, repositories, and swarms.
Check out these to learn more:. Where to go next. Try out the walkthrough at. Dig in deeper with example walkthroughs and source code. For a summary of Docker command line interface (CLI) commands, see. Check out the blog post,.
Addexecutable ( WIN32 MACOSXBUNDLE EXCLUDEFROMALL source1 source2. ) Adds an executable target called to be built from the source files listed in the command invocation. The corresponds to the logical target name and must be globally unique within a project. The actual file name of the executable built is constructed based on conventions of the native platform (such as.exe or just. By default the executable file will be created in the build tree directory corresponding to the source tree directory in which the command was invoked. See documentation of the target property to change this location.
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See documentation of the target property to change the part of the final file name. If WIN32 is given the property will be set on the target created. See documentation of that target property for details. If MACOSXBUNDLE is given the corresponding property will be set on the created target. See documentation of the target property for details. If EXCLUDEFROMALL is given the corresponding property will be set on the created target.
See documentation of the target property for details. See the manual for more on defining buildsystem properties. Addexecutable ( IMPORTED GLOBAL ) An references an executable file located outside the project. No rules are generated to build it, and the target property is True. The target name has scope in the directory in which it is created and below, but the GLOBAL option extends visibility.
It may be referenced like any target built within the project. IMPORTED executables are useful for convenient reference from commands like.
Details about the imported executable are specified by setting properties whose names begin in IMPORTED. The most important such property is (and its per-configuration version ) which specifies the location of the main executable file on disk. See documentation of the IMPORTED. properties for more information.
Addexecutable ( ALIAS ) Creates an, such that can be used to refer to in subsequent commands. The does not appear in the generated buildsystem as a make target. The may not be an or an ALIAS. ALIAS targets can be used as targets to read properties from, executables for custom commands and custom targets. They can also be tested for existance with the regular subcommand.
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The may not be used to modify properties of, that is, it may not be used as the operand of, etc. An ALIAS target may not be installed or exported.