path: root/Dockerfile

# syntax=docker/dockerfile:1.9

# This file is designed for production server deployment, not local development work
# For a containerized local dev environment, see: https://github.com/mastodon/mastodon/blob/main/README.md#docker

# Please see https://docs.docker.com/engine/reference/builder for information about
# the extended buildx capabilities used in this file.
# Make sure multiarch TARGETPLATFORM is available for interpolation
# See: https://docs.docker.com/build/building/multi-platform/
ARG TARGETPLATFORM=${TARGETPLATFORM}
ARG BUILDPLATFORM=${BUILDPLATFORM}

# Ruby image to use for base image, change with [--build-arg RUBY_VERSION="3.3.x"]
# renovate: datasource=docker depName=docker.io/ruby
ARG RUBY_VERSION="3.3.5"
# # Node version to use in base image, change with [--build-arg NODE_MAJOR_VERSION="20"]
# renovate: datasource=node-version depName=node
ARG NODE_MAJOR_VERSION="20"
# Debian image to use for base image, change with [--build-arg DEBIAN_VERSION="bookworm"]
ARG DEBIAN_VERSION="bookworm"
# Node image to use for base image based on combined variables (ex: 20-bookworm-slim)
FROM docker.io/node:${NODE_MAJOR_VERSION}-${DEBIAN_VERSION}-slim AS node
# Ruby image to use for base image based on combined variables (ex: 3.3.x-slim-bookworm)
FROM docker.io/ruby:${RUBY_VERSION}-slim-${DEBIAN_VERSION} AS ruby

# Resulting version string is vX.X.X-MASTODON_VERSION_PRERELEASE+MASTODON_VERSION_METADATA
# Example: v4.3.0-nightly.2023.11.09+pr-123456
# Overwrite existence of 'alpha.X' in version.rb [--build-arg MASTODON_VERSION_PRERELEASE="nightly.2023.11.09"]
ARG MASTODON_VERSION_PRERELEASE=""
# Append build metadata or fork information to version.rb [--build-arg MASTODON_VERSION_METADATA="pr-123456"]
ARG MASTODON_VERSION_METADATA=""

# Allow Ruby on Rails to serve static files
# See: https://docs.joinmastodon.org/admin/config/#rails_serve_static_files
ARG RAILS_SERVE_STATIC_FILES="true"
# Allow to use YJIT compiler
# See: https://github.com/ruby/ruby/blob/v3_2_4/doc/yjit/yjit.md
ARG RUBY_YJIT_ENABLE="1"
# Timezone used by the Docker container and runtime, change with [--build-arg TZ=Europe/Berlin]
ARG TZ="Etc/UTC"
# Linux UID (user id) for the mastodon user, change with [--build-arg UID=1234]
ARG UID="991"
# Linux GID (group id) for the mastodon user, change with [--build-arg GID=1234]
ARG GID="991"

# Apply Mastodon build options based on options above
ENV \
# Apply Mastodon version information
  MASTODON_VERSION_PRERELEASE="${MASTODON_VERSION_PRERELEASE}" \
  MASTODON_VERSION_METADATA="${MASTODON_VERSION_METADATA}" \
# Apply Mastodon static files and YJIT options
  RAILS_SERVE_STATIC_FILES=${RAILS_SERVE_STATIC_FILES} \
  RUBY_YJIT_ENABLE=${RUBY_YJIT_ENABLE} \
# Apply timezone
  TZ=${TZ}

ENV \
# Configure the IP to bind Mastodon to when serving traffic
  BIND="0.0.0.0" \
# Use production settings for Yarn, Node and related nodejs based tools
  NODE_ENV="production" \
# Use production settings for Ruby on Rails
  RAILS_ENV="production" \
# Add Ruby and Mastodon installation to the PATH
  DEBIAN_FRONTEND="noninteractive" \
  PATH="${PATH}:/opt/ruby/bin:/opt/mastodon/bin" \
# Optimize jemalloc 5.x performance
  MALLOC_CONF="narenas:2,background_thread:true,thp:never,dirty_decay_ms:1000,muzzy_decay_ms:0" \
# Enable libvips, should not be changed
  MASTODON_USE_LIBVIPS=true \
# Sidekiq will touch tmp/sidekiq_process_has_started_and_will_begin_processing_jobs to indicate it is ready. This can be used for a readiness check in Kubernetes
  MASTODON_SIDEKIQ_READY_FILENAME=sidekiq_process_has_started_and_will_begin_processing_jobs

# Set default shell used for running commands
SHELL ["/bin/bash", "-o", "pipefail", "-o", "errexit", "-c"]

ARG TARGETPLATFORM

RUN echo "Target platform is $TARGETPLATFORM"

RUN \
# Remove automatic apt cache Docker cleanup scripts
  rm -f /etc/apt/apt.conf.d/docker-clean; \
# Sets timezone
  echo "${TZ}" > /etc/localtime; \
# Creates mastodon user/group and sets home directory
  groupadd -g "${GID}" mastodon; \
  useradd -l -u "${UID}" -g "${GID}" -m -d /opt/mastodon mastodon; \
# Creates /mastodon symlink to /opt/mastodon
  ln -s /opt/mastodon /mastodon;

# Set /opt/mastodon as working directory
WORKDIR /opt/mastodon

# hadolint ignore=DL3008,DL3005
RUN \
# Mount Apt cache and lib directories from Docker buildx caches
--mount=type=cache,id=apt-cache-${TARGETPLATFORM},target=/var/cache/apt,sharing=locked \
--mount=type=cache,id=apt-lib-${TARGETPLATFORM},target=/var/lib/apt,sharing=locked \
# Apt update & upgrade to check for security updates to Debian image
  apt-get update; \
  apt-get dist-upgrade -yq; \
# Install jemalloc, curl and other necessary components
  apt-get install -y --no-install-recommends \
    curl \
    file \
    libjemalloc2 \
    patchelf \
    procps \
    tini \
    tzdata \
    wget \
  ; \
# Patch Ruby to use jemalloc
  patchelf --add-needed libjemalloc.so.2 /usr/local/bin/ruby; \
# Discard patchelf after use
  apt-get purge -y \
    patchelf \
  ;

# Create temporary build layer from base image
FROM ruby AS build

# Copy Node package configuration files into working directory
COPY package.json yarn.lock .yarnrc.yml /opt/mastodon/
COPY .yarn /opt/mastodon/.yarn

COPY --from=node /usr/local/bin /usr/local/bin
COPY --from=node /usr/local/lib /usr/local/lib

ARG TARGETPLATFORM

# hadolint ignore=DL3008
RUN \
# Mount Apt cache and lib directories from Docker buildx caches
--mount=type=cache,id=apt-cache-${TARGETPLATFORM},target=/var/cache/apt,sharing=locked \
--mount=type=cache,id=apt-lib-${TARGETPLATFORM},target=/var/lib/apt,sharing=locked \
# Install build tools and bundler dependencies from APT
  apt-get install -y --no-install-recommends \
    autoconf \
    automake \
    build-essential \
    cmake \
    git \
    libgdbm-dev \
    libglib2.0-dev \
    libgmp-dev \
    libicu-dev \
    libidn-dev \
    libpq-dev \
    libssl-de