add docker release

Reviewed-on: #2

.dockerignore

@@ -0,0 +1,46 @@
+# This file excludes paths from the Docker build context.
+#
+# By default, Docker's build context includes all files (and folders) in the
+# current directory. Even if a file isn't copied into the container it is still sent to
+# the Docker daemon.
+#
+# There are multiple reasons to exclude files from the build context:
+#
+# 1. Prevent nested folders from being copied into the container (ex: exclude
+#    /assets/node_modules when copying /assets)
+# 2. Reduce the size of the build context and improve build time (ex. /build, /deps, /doc)
+# 3. Avoid sending files containing sensitive information
+#
+# More information on using .dockerignore is available here:
+# https://docs.docker.com/engine/reference/builder/#dockerignore-file
+
+.dockerignore
+
+# Ignore git, but keep git HEAD and refs to access current commit hash if needed:
+#
+# $ cat .git/HEAD | awk '{print ".git/"$2}' | xargs cat
+# d0b8727759e1e0e7aa3d41707d12376e373d5ecc
+.git
+!.git/HEAD
+!.git/refs
+
+# Common development/test artifacts
+/cover/
+/doc/
+/test/
+/tmp/
+.elixir_ls
+
+# Mix artifacts
+/_build/
+/deps/
+*.ez
+
+# Generated on crash by the VM
+erl_crash.dump
+
+# Static artifacts - These should be fetched and built inside the Docker image
+# https://hexdocs.pm/phoenix/Mix.Tasks.Phx.Gen.Release.html#module-docker
+/assets/node_modules/
+/priv/static/assets/
+/priv/static/cache_manifest.json

Dockerfile

@@ -0,0 +1,94 @@
+# Find eligible builder and runner images on Docker Hub. We use Ubuntu/Debian
+# instead of Alpine to avoid DNS resolution issues in production.
+#
+# https://hub.docker.com/r/hexpm/elixir/tags?name=ubuntu
+# https://hub.docker.com/_/ubuntu/tags
+#
+# This file is based on these images:
+#
+#   - https://hub.docker.com/r/hexpm/elixir/tags - for the build image
+#   - https://hub.docker.com/_/debian/tags?name=trixie-20260112-slim - for the release image
+#   - https://pkgs.org/ - resource for finding needed packages
+#   - Ex: docker.io/hexpm/elixir:1.16.2-erlang-26.1.1-debian-trixie-20260112-slim
+#
+ARG ELIXIR_VERSION=1.16.2
+ARG OTP_VERSION=26.1.1
+ARG DEBIAN_VERSION=trixie-20260112-slim
+
+ARG BUILDER_IMAGE="docker.io/hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"
+ARG RUNNER_IMAGE="docker.io/debian:${DEBIAN_VERSION}"
+
+FROM ${BUILDER_IMAGE} AS builder
+
+# install build dependencies
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends build-essential git \
+  && rm -rf /var/lib/apt/lists/*
+
+# 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 ./
+RUN mix deps.get --only $MIX_ENV
+RUN mkdir config
+
+# copy compile-time config files before we compile dependencies
+# to ensure any relevant config change will trigger the dependencies
+# to be re-compiled.
+COPY config/config.exs config/${MIX_ENV}.exs config/
+RUN mix deps.compile
+
+COPY priv priv
+
+COPY lib lib
+
+# Compile the release
+RUN mix compile
+
+# Changes to config/runtime.exs don't require recompiling the code
+COPY config/runtime.exs config/
+
+COPY rel rel
+RUN mix release
+
+# start a new build stage so that the final image will only contain
+# the compiled release and other runtime necessities
+FROM ${RUNNER_IMAGE} AS final
+
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends libstdc++6 openssl libncurses6 locales ca-certificates \
+  && rm -rf /var/lib/apt/lists/*
+
+# Set the locale
+RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen \
+  && locale-gen
+
+ENV LANG=en_US.UTF-8
+ENV LANGUAGE=en_US:en
+ENV LC_ALL=en_US.UTF-8
+
+WORKDIR "/app"
+RUN chown nobody /app
+
+# set runner ENV
+ENV MIX_ENV="prod"
+
+# Only copy the final release from the build stage
+COPY --from=builder --chown=nobody:root /app/_build/${MIX_ENV}/rel/camp_api ./
+
+USER nobody
+
+# If using an environment that doesn't automatically reap zombie processes, it is
+# advised to add an init process such as tini via `apt-get install`
+# above and adding an entrypoint. See https://github.com/krallin/tini for details
+# ENTRYPOINT ["/tini", "--"]
+
+CMD ["/app/bin/server"]

config/config.exs

@@ -29,8 +29,6 @@ config :logger, :default_formatter,
 # Use Jason for JSON parsing in Phoenix
 config :phoenix, :json_library, Jason
 
-config :camp_api, :grist, api_key: System.get_env("GRIST_API_KEY")
-
 # Import environment specific config. This must remain at the bottom
 # of this file so it overrides the configuration defined above.
 import_config "#{config_env()}.exs"

config/dev.exs

@@ -42,6 +42,8 @@ config :camp_api, CampApiWeb.Endpoint,
 # Enable dev routes for dashboard and mailbox
 config :camp_api, dev_routes: true
 
+config :camp_api, :grist, api_key: System.get_env("GRIST_API_KEY")
+
 # Do not include metadata nor timestamps in development logs
 config :logger, :default_formatter, format: "[$level] $message\n"
 

config/runtime.exs

@@ -23,6 +23,8 @@ end
 config :camp_api, CampApiWeb.Endpoint,
   http: [port: String.to_integer(System.get_env("PORT", "4000"))]
 
+config :camp_api, :grist, api_key: System.get_env("GRIST_API_KEY")
+
 if config_env() == :prod do
   # The secret key base is used to sign/encrypt cookies and other secrets.
   # A default value is used in config/dev.exs and config/test.exs but you

lib/camp_api_web/router.ex

@@ -1,12 +1,13 @@
 defmodule CampApiWeb.Router do
   use CampApiWeb, :router
 
-  pipeline :api do
+  pipeline :public_api do
     plug :accepts, ["json"]
+    plug CORSPlug, origin: ["*"]
   end
 
   scope "/api", CampApiWeb do
-    pipe_through :api
+    pipe_through :public_api
 
     get "/gauge", GristController, :gauge
 

mix.exs

@@ -46,7 +46,8 @@ defmodule CampApi.MixProject do
       {:jason, "~> 1.2"},
       {:dns_cluster, "~> 0.2.0"},
       {:bandit, "~> 1.5"},
-      {:req, "~> 0.5.0"}
+      {:req, "~> 0.5.0"},
+      {:cors_plug, "~> 3.0"}
     ]
   end
 

mix.lock

@@ -1,5 +1,6 @@
 %{
   "bandit": {:hex, :bandit, "1.9.0", "6dc1ff2c30948dfecf32db574cc3447c7b9d70e0b61140098df3818870b01b76", [:mix], [{:hpax, "~> 1.0", [hex: :hpax, repo: "hexpm", optional: false]}, {:plug, "~> 1.18", [hex: :plug, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}, {:thousand_island, "~> 1.0", [hex: :thousand_island, repo: "hexpm", optional: false]}, {:websock, "~> 0.5", [hex: :websock, repo: "hexpm", optional: false]}], "hexpm", "2538aaa1663b40ca9cbd8ca1f8a540cb49e5baf34c6ffef068369cc45f9146f2"},
+  "cors_plug": {:hex, :cors_plug, "3.0.3", "7c3ac52b39624bc616db2e937c282f3f623f25f8d550068b6710e58d04a0e330", [:mix], [{:plug, "~> 1.13", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "3f2d759e8c272ed3835fab2ef11b46bddab8c1ab9528167bd463b6452edf830d"},
   "dns_cluster": {:hex, :dns_cluster, "0.2.0", "aa8eb46e3bd0326bd67b84790c561733b25c5ba2fe3c7e36f28e88f384ebcb33", [:mix], [], "hexpm", "ba6f1893411c69c01b9e8e8f772062535a4cf70f3f35bcc964a324078d8c8240"},
   "finch": {:hex, :finch, "0.21.0", "b1c3b2d48af02d0c66d2a9ebfb5622be5c5ecd62937cf79a88a7f98d48a8290c", [:mix], [{:mime, "~> 1.0 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:mint, "~> 1.6.2 or ~> 1.7", [hex: :mint, repo: "hexpm", optional: false]}, {:nimble_options, "~> 0.4 or ~> 1.0", [hex: :nimble_options, repo: "hexpm", optional: false]}, {:nimble_pool, "~> 1.1", [hex: :nimble_pool, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "87dc6e169794cb2570f75841a19da99cfde834249568f2a5b121b809588a4377"},
   "hpax": {:hex, :hpax, "1.0.3", "ed67ef51ad4df91e75cc6a1494f851850c0bd98ebc0be6e81b026e765ee535aa", [:mix], [], "hexpm", "8eab6e1cfa8d5918c2ce4ba43588e894af35dbd8e91e6e55c817bca5847df34a"},

rel/overlays/bin/server

@@ -0,0 +1,5 @@
+#!/bin/sh
+set -eu
+
+cd -P -- "$(dirname -- "$0")"
+PHX_SERVER=true exec ./camp_api start

rel/overlays/bin/server.bat

@@ -0,0 +1,2 @@
+set PHX_SERVER=true
+call "%~dp0\camp_api" start