Dockerfile

# syntax=docker/dockerfile:1

# Comments are provided throughout this file to help you get started.
# If you need more help, visit the Dockerfile reference guide at
# https://docs.docker.com/engine/reference/builder/

ARG NODE_VERSION=20.9.0

################################################################################
# Use node image for base image for all stages.
FROM node:${NODE_VERSION}-bullseye as base

RUN apt-get -y update
RUN apt-get -y upgrade

# Set working directory for all build stages.
WORKDIR /usr/src/app

################################################################################
# Create a stage for installing production dependecies.
FROM base as deps

# Download dependencies as a separate step to take advantage of Docker's caching.
# Leverage a cache mount to /root/.npm to speed up subsequent builds.
# Leverage bind mounts to package.json and package-lock.json to avoid having to copy them
# into this layer.
RUN --mount=type=bind,source=package.json,target=package.json \
    --mount=type=bind,source=package-lock.json,target=package-lock.json \
    --mount=type=cache,target=/root/.npm \
    npm ci --omit=dev

################################################################################
# Create a stage for building the application.
FROM deps as build

# Download additional development dependencies before building, as some projects require
# "devDependencies" to be installed to build. If you don't need this, remove this step.
RUN --mount=type=bind,source=package.json,target=package.json \
    --mount=type=bind,source=package-lock.json,target=package-lock.json \
    --mount=type=cache,target=/root/.npm \
    npm ci

# Copy the rest of the source files into the image.
COPY . .

RUN apt-get install -y cmake

# Compile piper-src
WORKDIR ./piper-src

RUN make

WORKDIR ..

# Run the build script.
RUN npm run build

################################################################################
# Create a new stage to run the application with minimal runtime dependencies
# where the necessary files are copied from the build stage.
FROM base as final

RUN mkdir piper_cache
# Creates a cachecontrol usergroup
RUN groupadd cachecontrol
# Adds root & node user to the cachecontrol usergroup
RUN usermod -a -G cachecontrol root
RUN usermod -a -G cachecontrol node
# Set piper_cache to be owned by cachecontrol and let it read & write
RUN chgrp cachecontrol ./piper_cache/
RUN chmod g+rw ./piper_cache/

# Compile and install fresh FFmpeg from sources:
# See: https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu
RUN sed -i -e's/ main/ main contrib non-free/g' /etc/apt/sources.list
RUN apt-get update -qq && apt-get -y install \
      autoconf \
      automake \
      build-essential \
      cmake \
      git-core \
      libass-dev \
      libfreetype6-dev \
      libsdl2-dev \
      libtool \
      libva-dev \
      libvdpau-dev \
      libvorbis-dev \
      libxcb1-dev \
      libxcb-shm0-dev \
      libxcb-xfixes0-dev \
      pkg-config \
      texinfo \
      wget \
      zlib1g-dev \
      nasm \
      yasm \
      libx265-dev \
      libnuma-dev \
      libvpx-dev \
      libmp3lame-dev \
      libopus-dev \
      libx264-dev \
      libfdk-aac-dev
RUN mkdir -p ~/ffmpeg_sources ~/bin && cd ~/ffmpeg_sources && \
    wget -O ffmpeg-6.1.tar.bz2 https://ffmpeg.org/releases/ffmpeg-6.1.tar.bz2 && \
    tar xjvf ffmpeg-6.1.tar.bz2 && \
    cd ffmpeg-6.1 && \
    PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure \
      --prefix="$HOME/ffmpeg_build" \
      --pkg-config-flags="--static" \
      --extra-cflags="-I$HOME/ffmpeg_build/include" \
      --extra-ldflags="-L$HOME/ffmpeg_build/lib" \
      --extra-libs="-lpthread -lm" \
      --bindir="$HOME/bin" \
      --enable-libfdk-aac \
      --enable-gpl \
      --enable-libass \
      --enable-libfreetype \
      --enable-libmp3lame \
      --enable-libopus \
      --enable-libvorbis \
      --enable-libvpx \
      --enable-libx264 \
      --enable-libx265 \
      --enable-nonfree && \
    PATH="$HOME/bin:$PATH" make -j8 && \
    make install -j8 && \
    hash -r
RUN mv ~/bin/ffmpeg /usr/local/bin && mv ~/bin/ffprobe /usr/local/bin && mv ~/bin/ffplay /usr/local/bin

# Use production node environment by default.
ENV NODE_ENV production

# Run the application as a non-root user.
USER node

# Copy package.json so that package manager commands can be used.
COPY package.json .

# Copy the production dependencies from the deps stage and also
# the built application from the build stage into the image.
COPY --from=deps /usr/src/app/node_modules ./node_modules
COPY --from=build /usr/src/app/dist/ ./dist/
COPY --from=build /usr/src/app/piper-src/install/ ./piper/
COPY --from=build /usr/src/app/piper-voices/ ./piper-voices/
COPY --from=build /usr/src/app/sfx/ ./sfx/

# Expose the port that the application listens on.
EXPOSE 8133

# Run the application.
CMD npm run start:prod