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Get started with Docker for Mac Estimated reading time: 16 minutes Welcome to Docker for Mac! Docker is a full development platform for creating containerized apps, and Docker for Mac is the best way to get started with Docker on a Mac.

Reading Time: 8 minutes Released earlier in 2017, Docker’s new native applications for Windows and Mac replaced the older methods for running Docker on Windows and Mac and created a better experience for developers using those platforms. The previous solution, Docker Toolbox, depended on VirtualBox to create a small Linux virtual machine that hosted your images and containers.

It worked well but could be unreliable at times and required workarounds that sometimes resulted in unexpected outcomes or not working at all. Docker for Mac instead uses virtualization technology that is already part of Mac OS X:. Docker for Windows uses Microsoft’s virtualization technology,.

These changes aim to make your Docker containers run faster than before, take up less disk space, and fit better into your operating system. This post is intended as a getting-started overview alongside tips and gotchas that I noticed whilst using Docker on different platforms. I am by no means an advanced Docker user, but I hope having everything you need in one place is helpful to you.

Cracking open the Docker Mac application First launch and configuration When you first run the Docker application, it will check your system for compatibility and requirements, show a welcome screen, and then start the Docker process. Your main interaction with the Docker application will be via a menu bar item, for example, to stop and start the Docker process, open Kitematic for GUI access to your containers, find documentation, and access preferences. General The General pane has settings for launch, updates, usage statistics, and excluding the virtual machine from backups (Mac only), which is a simple but useful feature to have, as it can end up being a large file.

File sharing While sharing volumes between Docker containers and the host operating system was possible with Docker Toolbox, it could be slow and suffer permissions issues. Docker for Mac uses a new file system created by Docker called ‘osxfs’. I can’t find much detail on the new file system, but there is some info. You can add or remove share local paths to share with containers using the + and – buttons, but these paths shouldn’t overlap, e.g., not Users and Users/homefolder. Docker for Windows uses SMB and you can only share an entire drive to Docker. Make sure you use credentials that have necessary permissions to access the paths you will need in containers. Advanced This pane lets you change the specs of the virtual machine and change the location of the disk image.

Proxies The application should automatically detect any HTTP(s) proxy settings you have at an operating system level, but you can check or override them here. While not a part of this preference pane, it will also automatically detect any VPN settings you have, allowing access to any containers running within it. Daemon Finally, in the Daemon pane, you can opt in to experimental features and configure registries you use for custom images.

If you’re feeling bold, you can configure the same options via the embedded JSON field. Using Docker natively Little of the process for using Docker has changed, except that it requires fewer steps. To start Docker, open the Docker application, and quit it to stop Docker. While Docker is running, you should be able to access it via Kitematic and any Mac or Windows shells (except Bash for Windows, as that is its own virtualized environment) and issue Docker commands as normal. For example, with the application running, you can use Kitematic or the command line to download and start images as containers.

Here’s the ‘hello world’ image running in Kitematic. Application running Other Docker commands such as docker-compose and docker-machine work, but for Machine (and thus Swarm) you will need to define a. This means you can manage Docker Machine from your Mac or Windows machine, but they will still be hosted elsewhere and still need to be managed by the traditional eval $(docker-machine env default) commands. Bonus: Want to access the VM on a Mac? Oh just: screen ~/Library/Containers/com.docker.docker/Data/com.docker.driver.amd64-linux/tty – and boom you’re in the vm — Tupperware Man ™ (@fntlnz) Here’s a random tip that doesn’t completely fit into this post, but I wanted to share with you. I was fortunate enough to have dinner with Lorenzo Fontana, a Docker Networking contributor and also. During dinner, he mentioned a peculiar command that allowed you to jump straight into the VM on a Mac.