[Housekeeping] Reduce Docker image size (#231)

* First pass at cutting down image size

* Made selfhosted docker work multiplatform

* Updated compile-time value to be runtime

* Fixed issue with tzdata file permissions

* Applied better fix for tz issue

config/prod.exs

@@ -7,6 +7,8 @@ import Config
 # before starting your production server.
 config :pinchflat, PinchflatWeb.Endpoint, cache_static_manifest: "priv/static/cache_manifest.json"
 
+config :tzdata, :data_dir, "/etc/elixir_tzdata_data"
+
 # Configures Swoosh API Client
 config :swoosh, api_client: Swoosh.ApiClient.Finch, finch_name: Pinchflat.Finch
 

dev.Dockerfile

@@ -5,10 +5,23 @@ ARG DEV_IMAGE="hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEB
 
 FROM ${DEV_IMAGE}
 
+ARG TARGETPLATFORM
+RUN echo "Building for ${TARGETPLATFORM:?}"
+
 # Install debian packages
 RUN apt-get update -qq
-RUN apt-get install -y inotify-tools ffmpeg curl git openssh-client jq \
+RUN apt-get install -y inotify-tools curl git openssh-client jq \
-  python3 python3-pip python3-setuptools python3-wheel python3-dev locales procps
+  python3 python3-setuptools python3-wheel python3-dev pipx \
+  python3-mutagen locales procps build-essential
+
+# Install ffmpeg
+RUN export FFMPEG_DOWNLOAD=$(case ${TARGETPLATFORM:-linux/amd64} in \
+    "linux/amd64")   echo "https://github.com/yt-dlp/FFmpeg-Builds/releases/download/latest/ffmpeg-master-latest-linux64-gpl.tar.xz"   ;; \
+    "linux/arm64")   echo "https://github.com/yt-dlp/FFmpeg-Builds/releases/download/latest/ffmpeg-master-latest-linuxarm64-gpl.tar.xz" ;; \
+    *)               echo ""        ;; esac) && \
+    curl -L ${FFMPEG_DOWNLOAD} --output /tmp/ffmpeg.tar.xz && \
+    tar -xf /tmp/ffmpeg.tar.xz --strip-components=2 --no-anchored -C /usr/bin/ "ffmpeg" && \
+    tar -xf /tmp/ffmpeg.tar.xz --strip-components=2 --no-anchored -C /usr/bin/ "ffprobe"
 
 # Install nodejs
 RUN curl -sL https://deb.nodesource.com/setup_20.x -o nodesource_setup.sh
@@ -21,16 +34,14 @@ RUN mix local.hex --force
 RUN mix local.rebar --force
 
 # Download and update YT-DLP
-# NOTE: If you're seeing weird issues, consider using the FFMPEG released by yt-dlp
 RUN curl -L https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp -o /usr/local/bin/yt-dlp
 RUN chmod a+rx /usr/local/bin/yt-dlp
 RUN yt-dlp -U
 
-# Download Apprise
+# Install Apprise
-RUN python3 -m pip install -U apprise --break-system-packages
+RUN export PIPX_HOME=/opt/pipx && \
-
+    export PIPX_BIN_DIR=/usr/local/bin && \
-# Download Mutagen for music thumbnail generation
+    pipx install apprise
-RUN python3 -m pip install -U mutagen --break-system-packages
 
 # Set the locale
 RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen

lib/pinchflat_web/components/custom_components/text_components.ex

@@ -84,9 +84,12 @@ defmodule PinchflatWeb.CustomComponents.TextComponents do
   """
   attr :datetime, :any, required: true
   attr :format, :string, default: "%Y-%m-%d %H:%M:%S"
-  attr :timezone, :string, default: Application.compile_env(:pinchflat, :timezone)
+  attr :timezone, :string, default: nil
 
   def datetime_in_zone(assigns) do
+    timezone = assigns.timezone || Application.get_env(:pinchflat, :timezone)
+    assigns = Map.put(assigns, :timezone, timezone)
+
     ~H"""
     <time><%= Calendar.strftime(Timex.Timezone.convert(@datetime, @timezone), @format) %></time>
     """

selfhosted.Dockerfile

@@ -1,16 +1,5 @@
 # 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?page=1&name=ubuntu
-# https://hub.docker.com/_/ubuntu?tab=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?tab=tags&page=1&name=bullseye-20231009-slim - for the release image
-#   - https://pkgs.org/ - resource for finding needed packages
-#   - Ex: hexpm/elixir:1.16.0-erlang-26.2.1-debian-bullseye-20231009-slim
-#
 ARG ELIXIR_VERSION=1.16.2
 ARG OTP_VERSION=26.2.2
 ARG DEBIAN_VERSION=bookworm-20240130-slim
@@ -20,31 +9,46 @@ ARG RUNNER_IMAGE="debian:${DEBIAN_VERSION}"
 
 FROM ${BUILDER_IMAGE} as builder
 
+ARG TARGETPLATFORM
+RUN echo "Building for ${TARGETPLATFORM:?}"
+
 # install build dependencies
-RUN apt-get update -y && apt-get install -y build-essential git curl \
+RUN apt-get update -y && \
-    && apt-get clean && rm -f /var/lib/apt/lists/*_*
+    # System packages
+    apt-get install -y \
+      build-essential \
+      git \
+      curl && \
+    # Node.js and Yarn
+    curl -sL https://deb.nodesource.com/setup_20.x -o nodesource_setup.sh && \
+    bash nodesource_setup.sh && \
+    apt-get install -y nodejs && \
+    npm install -g yarn && \
+    # Hex and Rebar
+    mix local.hex --force && \
+    mix local.rebar --force && \
+    # FFmpeg
+    export FFMPEG_DOWNLOAD=$(case ${TARGETPLATFORM:-linux/amd64} in \
+    "linux/amd64")   echo "https://github.com/yt-dlp/FFmpeg-Builds/releases/download/latest/ffmpeg-master-latest-linux64-gpl.tar.xz"   ;; \
+    "linux/arm64")   echo "https://github.com/yt-dlp/FFmpeg-Builds/releases/download/latest/ffmpeg-master-latest-linuxarm64-gpl.tar.xz" ;; \
+    *)               echo ""        ;; esac) && \
+    curl -L ${FFMPEG_DOWNLOAD} --output /tmp/ffmpeg.tar.xz && \
+    tar -xf /tmp/ffmpeg.tar.xz --strip-components=2 --no-anchored -C /usr/local/bin/ "ffmpeg" && \
+    tar -xf /tmp/ffmpeg.tar.xz --strip-components=2 --no-anchored -C /usr/local/bin/ "ffprobe" && \
+    # Cleanup
+    apt-get clean && \
+    rm -f /var/lib/apt/lists/*_*
 
 # prepare build dir
 WORKDIR /app
 
-# Install nodejs
-RUN curl -sL https://deb.nodesource.com/setup_20.x -o nodesource_setup.sh
-RUN bash nodesource_setup.sh
-RUN apt-get install -y nodejs
-RUN npm install -g yarn
-
-# install hex + rebar
-RUN mix local.hex --force && \
-    mix local.rebar --force
-
 # set build ENV
 ENV MIX_ENV="prod"
 ENV ERL_FLAGS="+JPperf true"
 
 # install mix dependencies
 COPY mix.exs mix.lock ./
-RUN mix deps.get --only $MIX_ENV
+RUN mix deps.get --only $MIX_ENV && mkdir config
-RUN mkdir config
 
 # copy compile-time config files before we compile dependencies
 # to ensure any relevant config change will trigger the dependencies
@@ -53,17 +57,11 @@ COPY config/config.exs config/${MIX_ENV}.exs config/
 RUN mix deps.compile
 
 COPY priv priv
-
 COPY lib lib
-
 COPY assets assets
 
-# compile assets
+# Compile assets
-RUN yarn --cwd assets install
+RUN yarn --cwd assets install && mix assets.deploy && mix compile
-RUN mix assets.deploy
-
-# Compile the release
-RUN mix compile
 
 # Changes to config/runtime.exs don't require recompiling the code
 COPY config/runtime.exs config/
@@ -71,30 +69,46 @@ COPY config/runtime.exs config/
 COPY rel rel
 RUN mix release
 
-# start a new build stage so that the final image will only contain
+## -- Release Stage --
-# the compiled release and other runtime necessities
+
 FROM ${RUNNER_IMAGE}
 
 ARG PORT=8945
 
-RUN apt-get update -y
+COPY --from=builder ./usr/local/bin/ffmpeg /usr/bin/ffmpeg
-RUN apt-get install -y libstdc++6 openssl libncurses5 locales ca-certificates \
+COPY --from=builder ./usr/local/bin/ffprobe /usr/bin/ffprobe
-  ffmpeg curl git openssh-client nano python3 python3-pip jq procps
-RUN apt-get clean && rm -f /var/lib/apt/lists/*_*
-
-# Download and update YT-DLP
-RUN curl -L https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp -o /usr/local/bin/yt-dlp
-RUN chmod a+rx /usr/local/bin/yt-dlp
-RUN yt-dlp -U
-
-# Download Apprise
-RUN python3 -m pip install -U apprise --break-system-packages
-
-# Download Mutagen for music thumbnail generation
-RUN python3 -m pip install -U mutagen --break-system-packages
 
+RUN apt-get update -y && \
+    # System packages
+    apt-get install -y \
+      libstdc++6 \
+      openssl \
+      libncurses5 \
+      locales \
+      ca-certificates \
+      python3-mutagen \
+      curl \
+      openssh-client \
+      nano \
+      python3 \
+      pipx \
+      jq \
+      procps && \
+    # Apprise
+    export PIPX_HOME=/opt/pipx && \
+    export PIPX_BIN_DIR=/usr/local/bin && \
+    pipx install apprise && \
+    # yt-dlp
+    curl -L https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp -o /usr/local/bin/yt-dlp && \
+    chmod a+rx /usr/local/bin/yt-dlp && \
+    yt-dlp -U && \
     # Set the locale
-RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen
+    sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen && \
+    # Clean up
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+# More locale setup
 ENV LANG en_US.UTF-8
 ENV LANGUAGE en_US:en
 ENV LC_ALL en_US.UTF-8
@@ -102,7 +116,7 @@ ENV LC_ALL en_US.UTF-8
 WORKDIR "/app"
 
 # Set up data volumes
-RUN mkdir /config /downloads
+RUN mkdir /config /downloads /etc/elixir_tzdata_data && chmod ugo+rw /etc/elixir_tzdata_data
 
 # set runner ENV
 ENV MIX_ENV="prod"
@@ -124,11 +138,6 @@ COPY --from=builder /app/_build/${MIX_ENV}/rel/pinchflat ./
 # root, use --user 0:0 or something.
 RUN passwd -d root
 
-# 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", "--"]
-
 HEALTHCHECK --interval=120s --start-period=10s \
   CMD curl --fail http://localhost:${PORT}/healthcheck || exit 1