felicson felicson

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

This repo is my experiment in deploying a basic Phoenix app using the release feature from elixir 1.9 (https://elixir-lang.org/blog/2019/06/24/elixir-v1-9-0-released/) and docker, via a multi-stage Dockerfile (https://docs.docker.com/develop/develop-images/multistage-build/) leveraging bitwalker's docker images for Elixir and Phoenix.

The simplest way to manage Elixir versions is to use asdf.

This gist is for Linux. For windows is the same thing.

create a file .login_info as below:

connect your.server.url    
usernanme

	# This is the first stage, for building things that will be required by the
	# final stage (notably the binary)
	FROM golang

	# Copy in just the go.mod and go.sum files, and download the dependencies. By
	# doing this before copying in the other dependencies, the Docker build cache
	# can skip these steps so long as neither of these two files change.
	COPY go.mod go.sum ./
	RUN go mod download

	require 'mina/bundler'
	require 'mina/git'

	set :application, "forum"
	set :domain, '%SERVERNAME%'
	set :deploy_to, "%PATH-TO-APPLICATION%"
	set :repository, '%REPOSITORY-URL%.git'
	set :branch, 'master'
	set :login, "%LOGIN%"