client: new internal client versioning system

- Version is now determined on-the-fly from manifest file
- Internal versioning no longer depends on environment file

client/Dockerfiles/finance/docker-compose.yml.archlinux.in

@@ -33,6 +33,7 @@ services:
       # NOTE: although TZ can be used within the container, this *should* be more dynamic
       - /etc/localtime:/etc/localtime:ro
     environment:
+      - DOCKER_FINANCE_VERSION=@DOCKER_FINANCE_VERSION@
       - DOCKER_FINANCE_CONTAINER_CMD=${DOCKER_FINANCE_CONTAINER_CMD}
       - DOCKER_FINANCE_CONTAINER_CONF=${DOCKER_FINANCE_CONTAINER_CONF}
       - DOCKER_FINANCE_CONTAINER_EDITOR=${DOCKER_FINANCE_CONTAINER_EDITOR}