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#!/bin/sh
create_socat_links() {
# Bind linked docker container to localhost socket using socat
USED_PORT="3000:22"
while read NAME ADDR PORT; do
if test -z "$NAME$ADDR$PORT"; then
continue
elif echo $USED_PORT | grep -E "(^|:)$PORT($|:)" > /dev/null; then
echo "init:socat | Can't bind linked container ${NAME} to localhost, port ${PORT} already in use" 1>&2
else
SERV_FOLDER=/app/gogs/docker/s6/SOCAT_${NAME}_${PORT}
mkdir -p ${SERV_FOLDER}
CMD="socat -ls TCP4-LISTEN:${PORT},fork,reuseaddr TCP4:${ADDR}:${PORT}"
echo -e "#!/bin/sh\nexec $CMD" > ${SERV_FOLDER}/run
chmod +x ${SERV_FOLDER}/run
USED_PORT="${USED_PORT}:${PORT}"
echo "init:socat | Linked container ${NAME} will be binded to localhost on port ${PORT}" 1>&2
fi
done << EOT
$(env | sed -En 's|(.*)_PORT_([0-9]+)_TCP=tcp://(.*):([0-9]+)|\1 \3 \4|p')
EOT
}
cleanup() {
# Cleanup SOCAT services and s6 event folder
# On start and on shutdown in case container has been killed
rm -rf $(find /app/gogs/docker/s6/ -name 'event')
rm -rf /app/gogs/docker/s6/SOCAT_*
}
create_volume_subfolder() {
# Create VOLUME subfolder
for f in /data/gogs/data /data/gogs/conf /data/gogs/log /data/git /data/ssh; do
if ! test -d $f; then
mkdir -p $f
fi
done
}
cleanup
create_volume_subfolder
LINK=$(echo "$SOCAT_LINK" | tr '[:upper:]' '[:lower:]')
if [ "$LINK" = "false" -o "$LINK" = "0" ]; then
echo "init:socat | Will not try to create socat links as requested" 1>&2
else
create_socat_links
fi
# Exec CMD or S6 by default if nothing present
if [ $# -gt 0 ];then
exec "$@"
else
exec /bin/s6-svscan /app/gogs/docker/s6/
fi
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