- Docker Pull And Run Image
- Docker Mac Download
- Docker Pull Download Image Stored Mac Os
- Docker Pull Download Image Stored Macbook Pro
- Docker Mac Os Image
The heaviest contents are usually images. If you use the default storage driver overlay2, then your Docker images are stored in /var/lib/docker/overlay2. There, you can find different files that represent read-only layers of a Docker image and a layer on top of it that contains your changes. Let’s explore the content by using an example. Once you figure out which image you would like to work with, you can run the docker pull command and download the image: docker pull NAME. For example, following command will download the Ubuntu image to the local system: docker pull ubuntu. Using tags, we can download a specific version of image to our local system (you can find available tags.
Estimated reading time: 15 minutes 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.
Note
This page contains information about the Docker Desktop Stable release. For information about features available in Edge releases, see the Edge release notes.
Preferences
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:
- Start Docker Desktop when you log in: Automatically starts Docker Desktop when you open your session.
- Automatically check for updates: By default, Docker Desktop automatically checks for updates and notifies you when an update is available. You can manually check for updates anytime by choosing Check for Updates from the main Docker menu.
- Include VM in Time Machine backups: Select this option to back up the Docker Desktop virtual machine. This option is disabled by default.
- Securely store Docker logins in macOS keychain: Docker Desktop stores your Docker login credentials in macOS keychain by default.
- 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.Click Switch to the Edge version to learn more about Docker Desktop Edge releases.
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.There are some limitations on the directories that can be shared:- The directory must not exist inside of Docker.
For more information, see:
- Namespaces in the topic onosxfs file system sharing.
- 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.
To enable experimental features in the Docker CLI, edit the
config.json
file and set experimental
to enabled.To enable experimental features from the Docker Desktop menu, clickSettings (Preferences on macOS) > Command Line and then turn onthe Enable experimental features toggle. Click Apply & Restart.
For a list of current experimental features in the Docker CLI, see Docker CLI Experimental features.
On both Docker Desktop Edge and Stable releases, you can toggle the experimental features on and off. 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. If
Experimental
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.
The Kubernetes client command,
kubectl
, is included and configured to connectto the local Kubernetes server. If you have kubectl
already installed andpointing to some other environment, such as minikube
or a GKE cluster, be sureto change context so that kubectl
is pointing to docker-desktop
:If you installed
kubectl
with Homebrew, or by some other method, andexperience conflicts, remove /usr/local/bin/kubectl
.- To enable Kubernetes support and install a standalone instance of Kubernetesrunning as a Docker container, select Enable Kubernetes. To set Kubernetes as thedefault orchestrator, select Deploy Docker Stacks to Kubernetes by default.Click Apply & Restart to save the settings. This instantiates images required to run the Kubernetes server as containers, and installs the
/usr/local/bin/kubectl
command on your Mac.When Kubernetes is enabled and running, an additional status bar item displaysat the bottom right of the Docker Desktop Settings dialog.The status of Kubernetes shows in the Docker menu and the context points todocker-desktop
. - By default, Kubernetes containers are hidden from commands like
dockerservice ls
, because managing them manually is not supported. To make themvisible, select Show system containers (advanced) and click Apply andRestart. Most users do not need this option. - To disable Kubernetes support at any time, clear the Enable Kubernetes check box. TheKubernetes containers are stopped and removed, and the
/usr/local/bin/kubectl
command is removed.For more about using the Kubernetes integration with Docker Desktop, seeDeploy 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.d
folder 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 completionsystem takes 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:
- Go to the Docker Desktop menu and then select Sign in / Create Docker ID.
- Enter your Docker ID and password and click Sign in.
- 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).
- Keep the images you download from Docker Hub to your private Docker image repository for future use.
- Keep the Docker custom images that you’ve built on your private Docker image repository.
- Access the private Docker image repository from any Docker server.
In this article, I am going to show you how to setup and use your own private Docker image repository. So, let’s get started.
You must have Docker installed in order to follow this article. I’ve written many articles on installing Docker in many different Linux distributions. If you’re having trouble installing Docker on your desired Linux distribution, then please read these articles at https://linuxhint.com.
If you need any further assistance in installing Docker on your desired Linux distribution, then, ask for help at https://support.linuxhint.com.
Network Topology:
This is the network topology for experimenting with Docker private image repository in this article. Here, I have 2 virtual machines (VMs) linuxhint-docker1 and linuxhint-docker2 with Docker installed. Both of these VMs are on the same network. Here, linuxhint-docker1 VM has the IP address 192.168.21.203 and DNS name docker1.linuxhint.local. I will install and configure a Docker container on the linuxhint-docker1 VM on port 5000 to be a Docker private image repository. Then, I will test the private Docker image repository by pushing and pulling Docker images from the linuxhint-docker2 VM. I will also pull Docker images uploaded to the private Docker image repository from linuxhint-docker1 VM just to verify that any Docker server on the network can use images from the configured private Docker image repository. So, let’s continue.
Setting Up a Private Docker Image Repository:
In this section, I am going to show you how to set up your own private Docker image repository. I am going to use the linuxhint-docker1 VM in this section.
![Stored Stored](/uploads/1/2/6/7/126753493/641967509.png)
First, create a directory on your computer where you want to save all the Docker images of your private Docker image repository.
![Docker Docker](/uploads/1/2/6/7/126753493/431700179.png)
Now, create a container of the registry image from the Docker Hub with the following command:
$ docker container run -d-p5000:5000--name registry -v
~/docker/registry:/var/lib/registry registry
~/docker/registry:/var/lib/registry registry
The registry container should be created. The Docker images you push to this private Docker image repository will be saved to the ~/docker/registry directory on linuxhint-docker1 VM.
Enabling insecure-registry:
You have to enable insecure registry on the Docker servers from which you want to access the Docker private image repository that you’ve created.
In this article, I want to access the Docker private image repository configured on the VM linuxhint-docker1 from the linuxhint-docker2 VM. So, on the linuxhint-docker2 VM, I have to tell Docker which insecure Docker repositories I want to use.
Docker Pull And Run Image
To do that, create a new Docker configuration file /etc/docker/daemon.json on linuxhint-docker2 VM with the following command:
Now, type in the following lines as marked in the screenshot below.
Here, I’ve added the IP address and port of the linuxhint-docker1 VM. If you have DNS configured on your network, then you can also use a DNS name here.
I have configured DNS for linuxhint-docker1 as follows via /etc/hosts file on linuxhint-docker2 VM.
As you can see, the DNS name for linuxhint-docker1 VM is docker1.linuxhint.local
So, you can add it as an insecure registry to the /etc/docker/daemon.json file as follows:
{
'insecure-registries': ['docker1.linuxhint.local:5000']
}
'insecure-registries': ['docker1.linuxhint.local:5000']
}
I’ve added both the IP address and DNS name as the insecure registry. So, the final /etc/docker/daemon.json file looks as follows:
Docker Mac Download
Finally, restart the docker service on the linuxhint-docker2 VM with the following command:
Now, you can use your own private Docker image repository hosted on linuxhint-docker1 VM from linuxhint-docker2 VM.
Pushing Images to and Pulling Images from the Private Docker Image Repository:
Now, pull any Docker image from Docker Hub on linuxhint-docker2 VM. I will go for the ubuntu image in this article.
As you can see, the ubuntu image is pulled from Docker Hub.
Now, in order to push the ubuntu image to your own private Docker image repository, you have to tag the ubuntu image in a specific format.
The format is,
Here, IP is the IP address or DNS name of the VM where the private Docker image repository container is running.
PORT is the port at which the private Docker image repository container is running.
IMAGE_NAME and TAG_NAME is the name and tag of the image respectively that you want to use to identify the image. TAG_NAME is optional.
You can tag the ubuntu image using IP address as follows:
You can also tag the ubuntu image using DNS name as follows:
$ docker tag ubuntu docker1.linuxhint.local:5000/ubuntu
Now, push the tagged image to the private Docker image repository as follows:
As you can see, the image is uploaded to the private Docker image repository.
Now, I am going to remove all the cached Docker images from my linuxhint-docker2 VM.
$ docker image rm ubuntu
$ docker image rm 192.168.21.203:5000/ubuntu
$ docker image rm 192.168.21.203:5000/ubuntu
As you can see, I have no cached image in the local Docker repository.
Now, let’s try pulling the ubuntu image from the private docker image repository.
As you can see, the ubuntu image is pulled from the private Docker image repository.
The image is also cached in the local Docker image repository.
As you can see, I can also pull the images on the linuxhint-docker1 VM uploaded from the linuxhint-docker2 VM.
Docker Pull Download Image Stored Mac Os
So, we can push and pull Docker images from our private Docker image repository.
Docker Pull Download Image Stored Macbook Pro
Starting registry Container:
If you restart your Docker server where the registry container is running, then it will not automatically start on the next boot. So, the private Docker image repository will not work. But, you can easily start the registry container and get it up and running with the following command:
Docker Mac Os Image
That’s how you set up and use your own Docker image repository. Thanks for reading this article.