Graham McIntire
edd64479df
Instead of installing system packages and tools on every deploy, we now have two base images that pre-bake all the slow setup steps. Base Images Created: 1. elixir-builder:latest - Builder stage base - hexpm/elixir with build-essential and git pre-installed - hex and rebar pre-installed - Saves ~40 seconds per deploy 2. debian-runtime:latest - Runtime stage base - Debian with all runtime packages pre-installed - Locale pre-configured (en_US.UTF-8) - /app directory pre-created - Saves ~60 seconds per deploy Main Dockerfile Changes: - Use elixir-builder:latest instead of hexpm/elixir - Use debian-runtime:latest instead of debian:trixie-slim - Remove apt-get install steps (now in base images) - Remove hex/rebar install (now in builder base) - Remove locale setup (now in runtime base) Build System: - build.sh builds both images with podman/docker auto-detect - Pushes to both GitLab registry and Docker Hub - Makefile targets for build/test/push/clean Total Time Saved Per Deploy: ~100 seconds (1m40s) Benefits: - Faster CI/CD builds (no repeated apt-get install) - Faster local development builds - Consistent build environment across all deploys - Security updates centralized in base image rebuilds
73 lines
2.2 KiB
Docker
73 lines
2.2 KiB
Docker
# Multi-stage base images for Towerops Phoenix app
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# Pre-bakes all the setup from k8s/Dockerfile so app deploys are faster
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#
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# This image is designed to be rebuilt regularly to get latest security updates
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ARG ELIXIR_VERSION=1.19.4
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ARG OTP_VERSION=28.3
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ARG DEBIAN_VERSION=trixie-20251229-slim
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#
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# BUILDER BASE IMAGE
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# Pre-installs build dependencies, hex, and rebar so every deploy is faster
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#
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FROM docker.io/hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION} AS builder
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LABEL maintainer="towerops"
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LABEL description="Elixir builder base with pre-installed build tools"
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# Set parallel compilation
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ENV MIX_OS_DEPS_COMPILE_PARTITION_COUNT=6
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# Install build dependencies (matches k8s/Dockerfile builder stage exactly)
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# This step takes ~30 seconds on every deploy, so we bake it in
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RUN apt-get update \
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&& DEBIAN_FRONTEND=noninteractive apt-get upgrade -y \
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&& DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
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build-essential \
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git \
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&& rm -rf /var/lib/apt/lists/*
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# Install hex + rebar (matches k8s/Dockerfile exactly)
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# This step takes ~10 seconds on every deploy, so we bake it in
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RUN mix local.hex --force \
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&& mix local.rebar --force
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# Set build ENV
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ENV MIX_ENV="prod"
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WORKDIR /app
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#
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# RUNTIME BASE IMAGE
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# Pre-installs runtime dependencies and configures locale
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#
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FROM docker.io/debian:${DEBIAN_VERSION} AS runtime
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LABEL maintainer="towerops"
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LABEL description="Debian 13 runtime base with pre-installed system packages and locale"
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# Install runtime dependencies (matches k8s/Dockerfile runner stage exactly)
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# This step takes ~30-60 seconds on every deploy, so we bake it in
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RUN apt-get update \
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&& DEBIAN_FRONTEND=noninteractive apt-get upgrade -y \
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&& DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
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libstdc++6 \
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openssl \
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libncurses6 \
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locales \
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ca-certificates \
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iputils-ping \
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&& rm -rf /var/lib/apt/lists/*
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# Configure locale (matches k8s/Dockerfile exactly)
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RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen \
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&& locale-gen
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ENV LANG=en_US.UTF-8
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ENV LANGUAGE=en_US:en
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ENV LC_ALL=en_US.UTF-8
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# Set up /app directory (matches k8s/Dockerfile exactly)
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WORKDIR "/app"
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RUN chown nobody /app
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