fix dockerfile

Author: Lgdev07

Dockerfile

@@ -2,20 +2,55 @@ FROM elixir:1.18.3-otp-27-slim AS base
 
 WORKDIR /code_comparison
 
-# Install system dependencies first!
 RUN apt-get update && \
-    apt-get install -y npm inotify-tools ca-certificates && \
+    apt-get install -y npm inotify-tools ca-certificates curl bash git && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
 
-# Now it's safe to run mix commands
 RUN mix do local.hex --force, local.rebar --force
 
-# Copy the entire application
-COPY . .
+# -----------------
+# BUILD
+# -----------------
+FROM base AS build
 
-# Install Elixir dependencies
-RUN mix deps.get
+ARG MIX_ENV=prod
+ARG SECRET_KEY_BASE=dummy_secret
+ENV MIX_ENV=$MIX_ENV
+ENV SECRET_KEY_BASE=$SECRET_KEY_BASE
 
-# Install npm dependencies
-RUN cd assets && npm install
+COPY . ./
+
+# install application
+RUN mix do deps.get, compile
+
+# -----------------
+# RELEASE
+# -----------------
+FROM build AS release
+
+# Build static assets and digest them
+RUN npm install --prefix assets && npm run deploy --prefix assets && mix phx.digest
+
+# generate release executable
+RUN mix release
+
+# -----------------
+# PRODUCTION
+# -----------------
+FROM elixir:1.18.3-otp-27-slim AS production
+
+WORKDIR /code_comparison
+
+ARG MIX_ENV=prod
+
+# install dependencies
+RUN apt-get update && \
+    apt-get install -y ncurses-bin curl && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+COPY --from=release /code_comparison/_build/$MIX_ENV/rel/code_comparison ./
+COPY --from=build /code_comparison/topics ./topics
+
+CMD ["bin/code_comparison", "start"]

config/prod.exs

@@ -10,14 +10,8 @@ use Mix.Config
 # which you should run after static files are built and
 # before starting your production server.
 config :code_comparison, CodeComparisonWeb.Endpoint,
-  url: [host: "codecomparison.me", port: 80],
-  cache_static_manifest: "priv/static/cache_manifest.json",
-  check_origin: [
-    "//codecomparison.me",
-    "//www.codecomparison.me",
-    "//dreary-sore-eland.gigalixirapp.com"
-  ],
-  force_ssl: [rewrite_on: [:x_forwarded_proto]]
+  server: true,
+  cache_static_manifest: "priv/static/cache_manifest.json"
 
 # Do not print debug messages in production
 config :logger, level: :info

config/prod.secret.exs

@@ -12,18 +12,24 @@ secret_key_base =
     """
 
 config :code_comparison, CodeComparisonWeb.Endpoint,
+  url: [host: System.get_env("RENDER_EXTERNAL_HOSTNAME") || "localhost", port: 80],
   http: [
+    ip: {0, 0, 0, 0, 0, 0, 0, 0},
     port: String.to_integer(System.get_env("PORT") || "4000"),
     transport_options: [socket_opts: [:inet6]]
   ],
-  secret_key_base: secret_key_base
+  secret_key_base: secret_key_base,
+  check_origin: [
+    "//code-comparison.onrender.com",
+    "https://code-comparison.onrender.com"
+  ]
 
 # ## Using releases (Elixir v1.9+)
 #
 # If you are doing OTP releases, you need to instruct Phoenix
 # to start each relevant endpoint:
 #
-#     config :code_comparison, CodeComparisonWeb.Endpoint, server: true
+config :code_comparison, CodeComparisonWeb.Endpoint, server: true
 #
 # Then you can assemble a release by calling `mix release`.
 # See `mix help release` for more information.

lib/code_comparison/languages.ex

@@ -9,6 +9,7 @@ defmodule CodeComparison.Languages do
   defp base_topics_path, do: Path.expand("topics", File.cwd!())
 
   @spec get_languages_by_topic(String.t()) :: list(%Language{})
+  def get_languages_by_topic(nil), do: []
   def get_languages_by_topic(topic) do
     topic_dir = Path.join(base_topics_path(), topic)