Merge pull request #11 from aeons/configurable-paths

Allow configuring path to dockerfiles

Author: teamon

README.md

@@ -63,7 +63,7 @@ like this:
 ```elixir
 config :hello, Hello.Endpoint,
   server: true,
-  url: [host: "${DOMAIN}"]    
+  url: [host: "${DOMAIN}"]
 
 config :hello, Hello.Mailer,
   adapter: Bamboo.MailgunAdapter,
@@ -89,6 +89,20 @@ Feel free to add some more apk packages or run some custom commands.
 TIP: To keep the build process efficient check whether a given package is required only for
 compilation (build) or runtime (release) or both.
 
+#### How to move the Dockerfiles?
+
+You can specify where to find the two Dockerfiles in the config.
+
+```elixir
+# config/config.exs
+config :mix_docker,
+  dockerfile_build: "path/to/Dockerfile.build",
+  dockerfile_release: "path/to/Dockerfile.release"
+```
+
+The path is relative to the project root, and the files must be located inside
+the root.
+
 
 #### How to configure a Phoenix app?
 

lib/mix_docker.ex

@@ -2,8 +2,8 @@ defmodule MixDocker do
   require Logger
 
   @dockerfile_path    :code.priv_dir(:mix_docker)
-  @dockerfile_build   "Dockerfile.build"
-  @dockerfile_release "Dockerfile.release"
+  @dockerfile_build   Application.get_env(:mix_docker, :dockerfile_build, "Dockerfile.build")
+  @dockerfile_release Application.get_env(:mix_docker, :dockerfile_release, "Dockerfile.release")
 
   def init(args) do
     # copy .dockerignore