deployment and prod configurations (incl dockerfile)

Dockerfile

@@ -0,0 +1,30 @@
+FROM elixir:1.12.2-alpine AS build
+
+# install build dependencies
+RUN apk add --no-cache build-base git python3 libstdc++
+
+# prepare build dir
+WORKDIR /app
+
+# install hex + rebar
+RUN mix local.hex --force && \
+    mix local.rebar --force
+
+# set build ENV
+ENV MIX_ENV=prod
+
+# install mix dependencies
+COPY mix.exs mix.lock ./
+COPY config config
+RUN mix do deps.get, deps.compile
+
+COPY priv priv
+RUN mix phx.digest
+
+# compile and build release
+COPY lib lib
+# uncomment COPY if rel/ exists
+# COPY rel rel
+RUN mix do compile, release
+
+CMD ["_build/prod/rel/fourletters/bin/fourletters", "start"]

config/prod.exs

@@ -10,7 +10,7 @@ use Mix.Config
 # which you should run after static files are built and
 # before starting your production server.
 config :fourletters, FourlettersWeb.Endpoint,
-  url: [host: "example.com", port: 80],
+  url: [host: "4-letters.net", port: 80],
   cache_static_manifest: "priv/static/cache_manifest.json"
 
 # Do not print debug messages in production
@@ -52,4 +52,4 @@ config :logger, level: :info
 
 # Finally import the config/prod.secret.exs which loads secrets
 # and configuration from environment variables.
-import_config "prod.secret.exs"
+# import_config "prod.secret.exs"

config/prod.secret.exs → config/releases.exs

@@ -2,7 +2,7 @@
 # from environment variables. You can also hardcode secrets,
 # although such is generally not recommended and you have to
 # remember to add this file to your .gitignore.
-use Mix.Config
+import Config
 
 secret_key_base =
   System.get_env("SECRET_KEY_BASE") ||
@@ -23,7 +23,7 @@ config :fourletters, FourlettersWeb.Endpoint,
 # If you are doing OTP releases, you need to instruct Phoenix
 # to start each relevant endpoint:
 #
-#     config :fourletters, FourlettersWeb.Endpoint, server: true
+config :fourletters, FourlettersWeb.Endpoint, server: true
 #
 # Then you can assemble a release by calling `mix release`.
 # See `mix help release` for more information.