Установить docker mac os brew

Marcin PilЕ›niak

How to install Docker on Mac OS using brew?

What is Docker?

Docker is the next step on long IT containerization way. What does it mean? Years ago, you could run each application/process in particular container, that application couldn’t go outside the container which it was run. It was very safe but difficult to manage and not sharable. So you couldn’t easy share your container to other machine or to other developers to reuse for example by open source community.

So, that solution was a little bit complicated and worked only on Linux. Today we have Docker, which allows you to run containers on all operation systems. What is important, this tool is not only modern but also easy to manage and easy to share to others developers.

Other ways to install it

In this post, I want to show you how to install Docker by using brew which installation process I wrote last time. For me, it’s the easiest and safest way. But there are a few other possibilities to install it on Mac OS.

Docker.com – first method

First what you have to do is to go to Docker website and just download and run the .dmg file.

This is probably the easiest way, but unfortunately not the best. Using native install method you don’t have to install VirtualBox to run Linux, but sharing files between your Mac OS and systems in containers are really slowly. I can recommend that solution only if you want to test something or your project doesn’t use a framework with a lot of files.

Docker Toolbox – second method

It’s an app provided by Docker Company for Mac OS and Windows. The special feature in this toolbox is the requirement for VirtualBox, which will be a supervisor to run Linux. So, Docker is available as another machine in Docker environment. This toolbox contains also docker-compose (more below) and Kinematic, which allow you to manage your container by using GUI than a command line.

Install

I guess you have installed brew if not just follow this page and do everything that I’ve described.

If you are ready, open your terminal and type something like this:

If you have done it that you’ve received notice that docker-machine-driver-xhyve has to run as root , so you have to execute that commands:

Both commands will ask you for a password. Don’t worry to type it in a command line.

If everything goes ok then you can create your first docker machine, just type this command:

This command, as you suppose, creates a docker machine, using the xhyve driver.
—xhyve-experimental-nfs-share – this flag allows you to share each file in your /Users/ folder between Mac OS and Linux run on Docker.

Because you can have a lot docker machine, you can type this command in your terminal:

It registers a few variables, which allow you to use default docker machine without typing “default” each time.

Useful tools

Probably, you’ve noticed that with docker you installed also docker-machine and docker-compose . These tools are not required but they are the strength of docker.

docker-machine

This tool allows you to prepare a lot of docker machines on your Mac OS, so you can have a lot of containers on many Linux distributions. You can dump all available commands just by typing docker-machine —help but most likely you will use three of them:

I guess I don’t have to describe what exactly this commands do. It’s so obvious. One thing you need to know, if something goes wrong, just try to restart your docker machine.

docker-compose

The main goal of docker: you can write like this “one process = one container”, but each app requires a lot process it could be a PHP, HTTP server, some database etc. Of course, you can run containers for each process manually, which is not a big deal with 3 containers, but trust me it escalates very fast, so you need an easy tool to manage your container and to manage the dependencies because one container can require access to another container. For example, PHP app needs information from a database, but it doesn’t need access to HTTP server. Of course, and HTTP server requires access to PHP.

To work with docker-compose you need to create an YAML file called docker-composer.yml where you describe which container you want to create and how they are linked between each other.

That file can look like this:

As you can see, you are creating two containers, first, contains MySQL database and second one – a WordPress instance. This example is flattened, in normal case you should split WordPress instance to three another containers: PHP, HTTP server and one for WordPress files.

There is also created one volume, which contains files of MySQL database. This solution prevents loosing data when you turn off your Mac, or just reset docker-machine or this particular container.

If you want to read something more about parameters available in docker-compose file, you can just go to docker documentation.

docker-compose , as well as other tools, provides a lot of commands available from a terminal, the number one is:

This command runs all containers defined in your docker-compose file. If it is needed – rebuild and remove old unused containers.

How to use

Everything that you need is in the section above. You can manage of course each particular container directly from command line using command docker . But it’s just wasting a time.

Access by domain

Probably you want to access to your container by your web browser using some domains. You need to know what is IP of your docker machine and you can check it using command line just typing this:

You see IP and then use that IP in your /etc/hosts file.

Potential problems

Because you are trying to run Linux environment on Mac OS you can some across a lot strange problems if you want to use it in common work. Fortunately, you just need to follow some rules to enjoy work with docker.

Sharing files

If you installed a docker as described above you can share only files from your /Users/ folder. You can debug what is sharable directly on your docker machine, which can receive access directly from command line, like this:

Now, you are logged on your Linux and can browse to / and check is there /Users/ folder which contains files from your Mac OS. If you don’t see your files, just try to reinstall Docker and xhyve.

Speed of I/O process

Because docker needs transfer files between your Mac OS and Linux using the NFS it’s always more slowly then operation directly on your disk. So, if you want to boost up your application you have to remember to share only needed files. if you are backend develop you don’t share frontend javascript libraries, just put in into inside container.

Don’t forget to ignore cache and logs files!

Access via domain/IP

Restarting Mac OS or docker-machine sometimes restarts also IP of the docker machine. If you can’t connect to your docker just check the current IP using this command:

If it doesn’t work, you have to update domains in your /etc/hosts file.

Источник

Install Docker Desktop on Mac

Estimated reading time: 7 minutes

Welcome to Docker Desktop for Mac. This page contains information about Docker Desktop for Mac system requirements, download URLs, instructions to install and update Docker Desktop for Mac.

Download Docker Desktop for Mac

System requirements

Your Mac must meet the following requirements to install Docker Desktop successfully.

Mac with Intel chip

macOS must be version 10.14 or newer. That is, Mojave, Catalina, or Big Sur. We recommend upgrading to the latest version of macOS.

If you experience any issues after upgrading your macOS to version 10.15, you must install the latest version of Docker Desktop to be compatible with this version of macOS.

Docker supports Docker Desktop on the most recent versions of macOS. That is, the current release of macOS and the previous two releases. As new major versions of macOS are made generally available, Docker stops supporting the oldest version and supports the newest version of macOS (in addition to the previous two releases). Docker Desktop currently supports macOS Mojave, macOS Catalina, and macOS Big Sur.

At least 4 GB of RAM.

VirtualBox prior to version 4.3.30 must not be installed as it is not compatible with Docker Desktop.

Mac with Apple silicon

You must install Rosetta 2 as some binaries are still Darwin/AMD64. To install Rosetta 2 manually from the command line, run the following command:

Install and run Docker Desktop on Mac

Double-click Docker.dmg to open the installer, then drag the Docker icon to the Applications folder.

Double-click Docker.app in the Applications folder to start Docker. In the example below, the Applications folder is in “grid” view mode.

The Docker menu () displays the Docker Subscription Service Agreement window. It includes a change to the terms of use for Docker Desktop.

Here’s a summary of the key changes:

• Our Docker Subscription Service Agreement includes a change to the terms of use for Docker Desktop
• It remains free for small businesses (fewer than 250 employees AND less than $10 million in revenue), personal use, education, and non-commercial open source projects.
• It requires a paid subscription for professional use in larger enterprises.
• The effective date of these terms is August 31, 2021. There is a grace period until January 31, 2022 for those that will require a paid subscription to use Docker Desktop.
• The existing Docker Free subscription has been renamed Docker Personal and we have introduced a Docker Business subscription .
• The Docker Pro, Team, and Business subscriptions include commercial use of Docker Desktop.

Click the checkbox to indicate that you accept the updated terms and then click Accept to continue. Docker Desktop starts after you accept the terms.

If you do not agree to the terms, the Docker Desktop application will close and you can no longer run Docker Desktop on your machine. You can choose to accept the terms at a later date by opening Docker Desktop.

For more information, see Docker Desktop License Agreement. We recommend that you also read the Blog and FAQs to learn how companies using Docker Desktop may be affected.

Quick start guide

If you’ve just installed the app, Docker Desktop launches the Quick Start Guide. The tutorial includes a simple exercise to build an example Docker image, run it is a container, push and save the image to Docker Hub.

Congratulations! You are now successfully running Docker Desktop. Click the Docker menu () to see Preferences and other options. To run the Quick Start Guide on demand, select the Docker menu and then choose Quick Start Guide.

Updates

When an update is available, Docker Desktop displays an icon to indicate the availability of a newer version.

Starting with Docker Desktop 4.1.0, the Software Updates section in the General tab also notifies you of any updates available to Docker Desktop. You can choose to download the update right away, or click the Release Notes option to learn what’s included in the updated version. If you are on a Docker Team or a Business subscription, you can turn off the check for updates by clearing the Automatically Check for Updates checkbox in the General settings. This will also disable the notification badge that appears on the Docker Dashboard.

To encourage developers to stay up to date, Docker Desktop displays a reminder two weeks after an update becomes available. You can dismiss this daily reminder by clicking Snooze. You can skip an update when a reminder appears by clicking the Skip this update option.

Docker Subscription Service Agreement

Beginning on August 31, 2021, you must agree to the Docker Subscription Service Agreement to continue using Docker Desktop. Read the Blog and the Docker subscription FAQs to learn more about the changes.

Click Download update When you are ready to download the update. This downloads the update in the background. After downloading the update, click Update and restart from the Docker menu. This installs the latest update and restarts Docker Desktop for the changes to take effect.

When Docker Desktop starts, it displays the Docker Subscription Service Agreement window. Read the information presented on the screen to understand how the changes impact you. Click the checkbox to indicate that you accept the updated terms and then click Accept to continue.

If you do not agree to the terms, the Docker Desktop application will close and you can no longer run Docker Desktop on your machine. You can choose to accept the terms at a later date by opening Docker Desktop.

Docker Desktop starts after you accept the terms.

Uninstall Docker Desktop

To uninstall Docker Desktop from your Mac:

1. From the Docker menu, select Troubleshoot and then select Uninstall.
2. Click Uninstall to confirm your selection.

Uninstalling Docker Desktop destroys Docker containers, images, volumes, and other Docker related data local to the machine, and removes the files generated by the application. Refer to the back up and restore data section to learn how to preserve important data before uninstalling.

Источник

Docker on Mac with Homebrew: A Step-by-Step Tutorial

Docker has changed the way developers work. It provides an easy way to safely move code from one machine to another without worrying about dependencies and server versions. It simplifies many operational aspects of running applications. In this post, you’ll learn how to install Docker on Mac OS using Homebrew.

What Are Homebrew and Homebrew Cask?

Don’t know Homebrew yet? It’s a package manager for macOS. It works on the command line and allows you to install software for your Mac. It’s handy and easy to use, which is why it’s also popular.

To install pretty much anything, you can simply type

and wait a few seconds. For Docker installation, however, you’ll need to use Homebrew Cask.

“What’s Homebrew Cask, and why can’t I install Docker with brew install docker?” you might ask. Let’s clarify…

If you have ever installed any GUI software on Mac the “standard way,” you probably know that it normally requires downloading the package, opening it, and installing by the drag-and-drop method to the Application folder. Homebrew, by default, can only install command-line tools.

Homebrew Cask is a Homebrew extension for installing GUI software on Mac. It means that instead of the standard download and drag-and-drop process, you can use this.

Docker on Mac is a GUI tool, so you need to use Homebrew Cask for the installation. But let’s take a step back and answer why you’d use Homebrew in the first place.

As I mentioned earlier, the standard way of installing GUI tools (including Docker) requires you to perform a few steps. First, find a Docker package on the internet. Then you download it, and then you open it on your Mac. Only after those steps can you use drag-and-drop to actually install it.

With Homebrew Cask, you can achieve the same result with only one command. So the main reason to use Cask is simplicity. It’s easier and takes less time.

How to Install Homebrew

In case you don’t have Homebrew installed yet, you only need to open a terminal and execute the following command:

The script explains what it will do and then pauses before it does it.

After installing Homebrew, you’re ready to install Docker.

Installing Docker on Mac With Homebrew Cask

Now that you have Homebrew installed, you can execute the following command to install Docker:

That’s it. Homebrew will find and download the Docker package and run the installer. After that, you only need to follow the Docker GUI to run the initial configuration.

How can you validate that the installation finished successfully from the command line? Execute:

If the above command doesn’t return the Docker version, you may need to start the Docker daemon first. You can do that by searching for Docker in Spotlight or in the Application folder in Finder and running it.

Whenever Docker’s running, you should also see its icon in the status bar:

Now let’s talk about how you can customize Docker to your liking.

Preferences

You can start using Docker directly after installation, but you can also customize it to your wishes. If you click the Docker icon in the status bar and go to Preferences, you’ll be able to choose whether Docker should start automatically with system startup.

If you plan to use Docker daily, then it’s smart to check that box. But if you’ll use it only from time to time, you’ll save some resources by leaving it unchecked. It takes only a few seconds to start Docker.

Next, if you go to the Resources section, you’ll be able to customize how much CPU, RAM memory, swap disk space, and disk size Docker will be able to use. Again, you may want to customize it depending on your needs.

If you use Docker for testing only, then you may lower the Docker resource usage. On the other hand, if you use it extensively for many containers at the same time, it makes sense for you to assign more resources for Docker.

Using Docker on Mac with Homebrew

Now that you have Docker installed and running, let’s discuss what you can do with it. To simply run a container, you can execute:

Docker will first try to find a [image_name]:latest. If you don’t specify a Docker image version when executing the docker run command, then Docker will default to the latest version. Since you just installed Docker and don’t have any images on your Mac, Docker won’t find an image there. It will then try to find one on DockerHub, the official Docker registry. If Docker finds the image version there, it will download it and run it for you.

Running an Example

Let’s see an example:

Congratulations! You just started your first Docker container on your Mac.

As you can see in the output, the hello-world container also nicely explains step by step what happened.

If you try to run the same command again, Docker will check again if hello-world is available locally. Since you just downloaded it seconds ago, there’s no need to download it again. Therefore, Docker will run a new container from a local copy of the hello-world image.

Making the Console Interactive

You may have noticed that you ran the container, but you couldn’t do anything with it. It did its job (printed a welcome message) and exited.

To get the console access to the inside of the container, you need to execute a docker run command with -it parameter. Doing this instructs Docker to allocate a pseudo-TTY connected to the container’s stdin, which means creating an interactive Bash shell in the container.

For example, to run an Ubuntu container and get access to Bash inside that container, you need to run:

Now let’s look at another Docker functionality.

Port Forwarding

Ability to get access into the shell inside the container and port forwarding are the two most commonly used Docker functionalities. Port forwarding allows you to access applications running inside the container through your host machine’s IP address (or localhost address).

For example, to run a NGINX server inside a container and expose it on port 8080 of your local machine, you need to pass -p 8080:80 parameter as follows:

Then, you can access an application running on port 80 inside the container by making an HTTP call to localhost:8080.

Summary

In this post, you learned what Homebrew and Homebrew Cask are and how to use the latter to install Docker on your Mac. I explained some customization options and showed you a basic usage of Docker on Mac.

We covered only very basic commands, but Docker offers much more than that. If you want to learn more about Docker, this Docker containerization boot camp is a great way to do it. It covers in detail basics like these:

• How Docker works
• How to use it
• How and where to store images

This tutorial from Cprime also offers more advanced topics, including:

• Continuous integration
• Orchestration

If you want, you can register here . Best of luck to you as you learn more about Docker, Homebrew, and Homebrew Cask!

Источник