#!/bin/sh
# deploy/docker-entrypoint.sh: the Docker image's ENTRYPOINT. It runs as
# root only to make /var/lib/pixa usable by pixad: a host directory
# bind-mounted there keeps its host owner, often root, and data from an
# earlier run may belong to another uid. The server itself always runs
# as pixad.
set -eu

main() {
    mkdir -p /var/lib/pixa
    # Only the directory and its top-level entries are checked, so a
    # normal start does not walk the cache. -depth gives each directory
    # to pixad after its contents, so a start stopped part way leaves
    # something at the top for the next start to find; -h changes a
    # symlink itself, never the file it points to.
    if [ -n "$(find /var/lib/pixa -maxdepth 1 \( ! -user pixad -o ! -group pixad \))" ]; then
        find /var/lib/pixa -depth -exec chown -h pixad:pixad {} +
    fi
    chmod 750 /var/lib/pixa
    exec su-exec pixad /usr/local/bin/pixad "$@"
}

main "$@"