A Complete Beginner Gets Started Using Docker (Mac)
Our team is planning on moving to Docker in the coming months. After attending a number of Docker-related sessions at cf.Objective() this past week, it seemed time to get my hands dirty and actually start working with it. The following is a painfully simple walkthrough of the steps I took to go from zero-to-Docker.
- Everyone says to get started at docker.io, but that site redirects now. If you're a developer, start at www.docker.com/get-docker; it's where you end up after navigating all the marketing on the homepage.
- There are two editions of Docker available. We're just getting started, so we want the free, Community Edition.
- Following an overview of the Community Edition, I followed the link to download Docker CE for Mac from the Docker Store.
- I used the Stable download (as opposed to the Edge version) and ran through the installation of the desktop environment. It culminated with the cute message: "We are whaly happy to have you."
- At this point the desktop app prompts you to "Sign in / Create a Docker ID". Since I didn't have a Docker ID set up yet, I followed the link to cloud.docker.com.
- I set up my Docker ID, confirmed my email address, and logged in.
- I got a "Welcome to Docker Cloud" message, with some additional steps that I could take, and guides to Docker Concepts. I skipped these for now and went back to the desktop installation.
- Now that I had my Docker ID, I logged into desktop app.
- Then, following the installation instructions, I opened my terminal and ran
docker version, which showed the version installed (it was 17.06.0-ce, for the record).
- I then ran
docker run hello-world, which confirmed that images were being pulled successfully, and which also provided a helpful explanation of what actually happened during the command.
- As a side note, I wondered where the images were being stored on my machine. A quick search lead me to this answer:
Admittedly, there's nothing particularly insightful or complicated here. However, sometimes the hardest part of learning/using a new technology is overcoming inertia and just getting started. Next, I dive into getting the Lucee CFML engine up and running on my Docker setup.