Add shell/bash to Dockerfile

[gitbuda]

No description provided.

[gitbuda]

The problem is that with the current approach it's not possible to do the following:

  memgql-init:
    image: memgraph/mgconsole:1.5.0
    container_name: memgql-init
    entrypoint:
      - bash
      - -c
      - |
        echo "RETURN 1;" | mgconsole"