DLE UI fail to start after server reboot

Goal

Noticed that DLE UI fails to start after server restart(docker service restart), after checking logs in dblab-server container found error:

2022/05/18 06:18:06 [INFO]   Retrieval mode: logical
2022/05/18 06:18:06 [INFO]   API server started listening on :2345.
2022/05/18 06:18:06 [ERROR]  Failed to start embedded UI container: failed to prepare Docker image for embedded UI: Error response from daemon: Conflict. The container name "/dblab_embedded_ui_ca1lek7biiaucorn2620" is already in use by container "973c04cbe6f9b726989d36321a322033f88a34eec3af875517335ea5adce4628". You have to remove (or rename) that container to be able to reuse that name.

Steps to reproduce:

• start dblab server container, wait for UI container to be in running state
• manually stop UI container
• stop dblab container
• start dblab container - dblab container fail to start with error that UI container already exists

TODO / How to implement

Can be multiple ways to implement it:

• try to recreate UI container
• try to start existing container

Acceptance criteria

DLE UI container starts after server restart

added Bug Priority low labels

try to start existing container

Slack discussion (internal): https://postgres-ai.slack.com/archives/C03FY0QD3TK/p1652858449270719

mentioned in merge request !538 (merged)

assigned to @denis256

changed the description

mentioned in issue #383 (closed)

mentioned in commit 8f34615a

mentioned in commit ec26728f

closed with merge request !538 (merged)

mentioned in issue #389 (closed)