docker: Libervia revision can now be specified: Using the `DOCKER_LIBERVIA_REV` environment variable, backend (and related repos) revision can now be specified. By default (variable empty or not set), the current `tip` version is used, and `dev` is used for tagging. If the variable is set, the revision will be used and used for tagging the image.

#!/bin/bash
set -e

usermod -u "$(stat -c %u /var/lib/prosody/.)" prosody

if [[ "$1" != "prosody" ]]; then
    exec prosodyctl "$@"
    exit 0;
fi

if [ "$LOCAL" -a  "$PASSWORD" -a "$DOMAIN" ] ; then
    prosodyctl register "$LOCAL" "$DOMAIN" "$PASSWORD"
fi

exec runuser -u prosody -- "$@"