Fix docker entrypoint & image script (#1233)

Author: tomchop

extras/docker/Dockerfile

@@ -22,5 +22,3 @@ RUN poetry install --no-root --with plugins
 ENV PYTHONPATH /app
 
 ENTRYPOINT ["/docker-entrypoint.sh"]
-
-CMD ["webserver"]

extras/docker/dev/docker-compose.yaml

@@ -1,4 +1,3 @@
-version: '3.3'
 services:
 
   redis:

extras/docker/docker-entrypoint.sh

@@ -22,7 +22,7 @@ elif [[ "$1" = 'toggle-admin' ]]; then
 elif [[ "$1" = 'migrate-arangodb' ]]; then
     poetry run python yetictl/cli.py migrate-arangodb "${@:2}"
 elif [[ "$1" = 'envshell' ]]; then
-    poetry shell
+    $(poetry env activate) && exec bash
 else
     exec "$@"
 fi