Add Dockerfile-based Dokku deployment for monorepo layout

Uses a multi-stage Docker build that copies both app/ and blogex/, preserving the path dependency. Includes release scripts, migration module, and a sample Dokku setup script. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-18 10:55:44 +00:00
parent e56ea0400f
commit 2d97353649
8 changed files with 219 additions and 0 deletions
@@ -0,0 +1,86 @@
+# Dockerfile for Dokku deployment
+# Multi-stage build for Phoenix/Elixir app with monorepo layout
+
+ARG ELIXIR_VERSION=1.18.3
+ARG OTP_VERSION=27.2.4
+ARG DEBIAN_VERSION=bookworm-20260316-slim
+
+ARG BUILDER_IMAGE="docker.io/hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"
+ARG RUNNER_IMAGE="docker.io/debian:${DEBIAN_VERSION}"
+
+# =============================================================================
+# Build stage
+# =============================================================================
+FROM ${BUILDER_IMAGE} AS builder
+
+RUN apt-get update -y && apt-get install -y build-essential git \
+    && apt-get clean && rm -f /var/lib/apt/lists/*_*
+
+WORKDIR /build
+
+# Install hex + rebar
+RUN mix local.hex --force && \
+    mix local.rebar --force
+
+ENV MIX_ENV="prod"
+
+# Copy blogex dependency first (changes less often)
+COPY blogex /build/blogex
+
+# Copy app dependency files first for better layer caching
+COPY app/mix.exs app/mix.lock /build/app/
+WORKDIR /build/app
+
+RUN mix deps.get --only $MIX_ENV
+RUN mkdir config
+
+# Copy compile-time config files
+COPY app/config/config.exs app/config/${MIX_ENV}.exs config/
+RUN mix deps.compile
+
+# Copy application source and compile
+COPY app/priv priv
+COPY app/assets assets
+COPY app/lib lib
+COPY app/rel rel
+COPY app/config/runtime.exs config/
+
+RUN mix compile
+
+# Build assets after compile (phoenix-colocated hooks need compiled app)
+RUN mix assets.deploy
+
+# Build the release
+RUN mix release
+
+# =============================================================================
+# Runtime stage
+# =============================================================================
+FROM ${RUNNER_IMAGE}
+
+RUN apt-get update -y && \
+    apt-get install -y libstdc++6 openssl libncurses5 locales ca-certificates \
+    && apt-get clean && rm -f /var/lib/apt/lists/*_*
+
+# Set the locale
+RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen
+ENV LANG en_US.UTF-8
+ENV LANGUAGE en_US:en
+ENV LC_ALL en_US.UTF-8
+
+WORKDIR /app
+
+RUN chown nobody /app
+ENV MIX_ENV="prod"
+
+# Copy the release from the build stage
+COPY --from=builder --chown=nobody:root /build/app/_build/${MIX_ENV}/rel/firehose ./
+
+USER nobody
+
+# Dokku uses the EXPOSE port for routing
+EXPOSE 4000
+
+ENV PHX_SERVER=true
+
+CMD ["/app/bin/server"]