How do I run Elixir Phoenix Docker in production mode using example from Phoenix Guides?

Phoenix Forum Questions / Help
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I asked a question on StackOverflow and am not sure of the etiquette, do I just post a link (https://stackoverflow.com/questions/58163103/how-do-i-run-elixir-phoenix-docker-in-production-mode-using-example-from-phoenix) or do I ask the entire question here too?

To summarize, I’m trying to run a container with a vanilla phoenix app using the example Dockerfile on the Phoenix Guides but I keep running into issues with the image. Can anyone tell me what the bare minimum is to get it to work including the docker run command?

Thank you so much

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Step 1 -> install and verify if your Docker is running.

Step 2 -> Use this image https://hub.docker.com/r/bitwalker/alpine-elixir-phoenix/

Step 3 -> Enjoy !

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Thank you so much for responding. :clap:

By changing the base image (and all subsequent commands, and not using elixir releases) are you saying I should not try to do it with the example image or use elixir releases? If so, can you explain why?

I had my :broken_heart: set on using the example image with the new releases but due to a lack of a clear path I may have to settle on alternatives… (╯°□°)╯︵ ┻━┻

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If you are looking to run your Phoenix app from within a container built via mix releases, I have an in depth tutorial that I wrote on my blog: https://akoutmos.com/post/multipart-docker-and-elixir-1.9-releases/

When I wrote the post 1.9 was still in RC so the base image I use is an Erlang image. But if you look in the Disqus comments I also provide an updated Dockerfile for use with the official Elixir image.

Hope that helps!

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Take a look at how to create releases.
https://hexdocs.pm/mix/Mix.Tasks.Release.html
You can use it inside the container to run your app in production mode.

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I wrote up how to leverage releases in Docker using multi-stage builds.
You might find it useful:

Using Elixir releases and multi-stage Docker files to simplify Phoenix deployment

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