Dockerfile

FROM alpine:3.7

LABEL maintainer="gregor@zurowski.org"

ENV SUBSONIC_VERSION=6.1.6
ENV SUBSONIC_BIN=/opt/subsonic
ENV SUBSONIC_HOME=/var/subsonic

# Download Subsonic
ADD https://s3-eu-west-1.amazonaws.com/subsonic-public/download/subsonic-${SUBSONIC_VERSION}-standalone.tar.gz /tmp/subsonic.tar.gz

# Install Java and audio tools
RUN apk --update add --no-cache openjdk8-jre-base ffmpeg lame && \
    rm -rf /var/cache/apk/*

# Set up Subsonic binaries
RUN mkdir -p ${SUBSONIC_HOME} && \
    mkdir -p ${SUBSONIC_BIN} && \
    tar zxvf /tmp/subsonic.tar.gz -C ${SUBSONIC_BIN} && \
    rm -rf /tmp/*

# Modify startup script
## Don't redirect logs and don't fork main process
RUN sed -i "s/ > \${LOG} 2>&1 &//" ${SUBSONIC_BIN}/subsonic.sh
## Create symlinks for transcoding tools (because Subsonic has hard-coded paths for these)
RUN sed -i '/# Create Subsonic home directory./i \
mkdir -p ${SUBSONIC_HOME}/transcode && ln -fs /usr/bin/ffmpeg /usr/bin/lame ${SUBSONIC_HOME}/transcode\n' ${SUBSONIC_BIN}/subsonic.sh

VOLUME ${SUBSONIC_HOME}
VOLUME /var/music

EXPOSE 4040

ENTRYPOINT ["/bin/sh", "-c", "${SUBSONIC_BIN}/subsonic.sh", "--home=${SUBSONIC_HOME}"]