Docker can probably be a good fit for your usecase. One of the pros of Docker is the ability to quickly set-up and tear-down. Here's an example: Because containers have their own filesystem that is isolated from your host, you can start up a mysql:5.6 container, perform whatever operations you need to do for your testing, and stop the container. Apple M1 ARM based Mac as a developer: docker and brew will take a while to be working at all or supported « The Wiert Corner – irregular stream of stuff « Using both Google Fi and Google Voice means you need to use two Google accounts on the same phone Archiving Google Product Forums URLs ». Docker on Mac with Kubernetes support. Kubernetes is available in Docker for Mac for 18.06 Stable or higher and includes a Kubernetes server and client, as well as integration with the Docker executable. The Kubernetes server runs locally within your Docker instance and it is similar to the Docker on Windows solution.

Just recently I had to install Docker on my MacOS machine. Here I want to give you a brief walkthrough on how to achieve it. First of all, we need Homebrew to install all the necessary Docker dependencies. If there isn't a Homebrew installation on your Mac, follow this guide for a developer setup.

Install the docker dependency with Homebrew after making sure that all Homebrew dependencies are on the latest version:

You will also need a MacOS specific environment in which Docker can be used, because natively Docker uses a Linux environment. Therefore, install the docker-machine and virtualbox dependencies:

Note: If the last install fails, check your MacOS' System Preference and verify if System software from developer 'Oracle America, inc' was blocked from loading. shows up. If you see it, hit the 'Allow'-button and install it again.

Optional: if you want to use Docker Compose later, install the docker-compose dependency with Homebrew:

Everything related to Docker and its environment is installed now. Let's get started with using it. First, create an engine for Docker on MacOS. This needs to be done only once, unless you want to create more than one engine by giving them other names than default. Usually one engine should be sufficient.

Using the following command for your Docker Machine, you should see whether your last Docker engine got created and whether you have more than one engine if desired:

Usually the Docker engine's STATE should be Running. If it isn't, like it's shown in the last output, you can start the engine with Docker Machine:

Checking your list of Docker engines again should lead you to one running Docker engine:

Just for the sake of knowing about it, you can stop your Docker engine anytime too:

Make sure that your Docker engine is running for the next steps. Last, we need to configure the environment variables for Docker. Run the following command to find out how:

Usually this prints out the command to set all the env variables set for MacOS; which is the following:

Finally, you should be able to start a Docker container with a pre-defined Docker image to check whether everything works as expected:

The first time running this command should take some time, because the pre-defined Docker image is pulled from a remote server. Every additional time you run this command, it should print its output almost in an instant, because the Docker image is already there and the build for the Docker container from the Docker image doesn't take long for this example. Congratulations, Docker is running on your Mac machine now.

This tutorial is part 1 of 2 in the series.

• Part 2:How to Docker with Node.js

This tutorial is part 1 of 2 in the series.

• Part 2:How to Docker with React

This tutorial is part 1 of 2 in the series.

• Part 2:How to Docker with create-react-app

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.
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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.

Install Docker

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:

Docker Daemon Mac Brew

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

Uninstall Docker Mac Brew

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.