Docker (compose) Permission denied

Just to be sure: I removed 'Everyone' from the Permission-list of the Folder. My Docker-Compose file with the specified user-id:
```
version: "3.4"

services:
op-connect-api:
image: 1password/connect-api:latest
user: "1042"
ports:
- "8888:8080"
volumes:
- "./1password-credentials.json:/home/opuser/.op/1password-credentials.json"
- "data:/home/opuser/.op/data"
op-connect-sync:
image: 1password/connect-sync:latest
user: "1042"
volumes:
- "./1password-credentials.json:/home/opuser/.op/1password-credentials.json"
- "data:/home/opuser/.op/data"

volumes:
data:

```
User '1password' having Read/Write access to my '1password' Shard Folder and (sub)files containing the docker-compose.yml and credentials file, including the UID of this user

Logging from api-container

{"log_message":"(W) configured to use HTTP with no TLS","timestamp":"2022-02-09T11:58:01.374531594Z","level":2}
{"log_message":"(I) starting 1Password Connect API ...","timestamp":"2022-02-09T11:58:01.375385141Z","level":3}
{"log_message":"(I) serving on :8080","timestamp":"2022-02-09T11:58:01.376055616Z","level":3}
{"log_message":"(I) [discovery-local] starting discovery, advertising endpoint 33709 /meta/message","timestamp":"2022-02-09T11:58:01.37452708Z","level":3}
{"log_message":"(I) established incoming bus peer connection","timestamp":"2022-02-09T11:58:01.38045443Z","level":3}

Logging from sync-container

{"log_message":"(W) configured to use HTTP with no TLS","timestamp":"2022-02-09T11:58:01.27942699Z","level":2}
{"log_message":"(I) [discovery-local] starting discovery, advertising endpoint 35052 /meta/message","timestamp":"2022-02-09T11:58:01.279515199Z","level":3}
{"log_message":"(I) starting 1Password Connect Sync ...","timestamp":"2022-02-09T11:58:01.285430604Z","level":3}
{"log_message":"(I) serving on :8080","timestamp":"2022-02-09T11:58:01.285477533Z","level":3}
{"log_message":"(I) database initialization complete","timestamp":"2022-02-09T11:58:01.381435241Z","level":3}
{"log_message":"(I) ### syncer credentials bootstrap ### ","timestamp":"2022-02-09T11:58:01.3818318Z","level":3}
{"log_message":"(E) Server: (unable to get credentials and initialize API, retrying in 500ms), Wrapped: (failed to FindCredentialsUniqueKey), Wrapped: (failed to loadCredentialsFile), Wrapped: (LoadLocalAuthV2 failed to credentialsDataFromDisk), open /home/opuser/.op/1password-credentials.json: permission denied","timestamp":"2022-02-09T11:58:01.381976897Z","level":1}
{"log_message":"(I) ### syncer credentials bootstrap ### ","timestamp":"2022-02-09T11:58:01.882164464Z","level":3}
{"log_message":"(E) Server: (unable to get credentials and initialize API, retrying in 1s), Wrapped: (failed to FindCredentialsUniqueKey), Wrapped: (failed to loadCredentialsFile), Wrapped: (LoadLocalAuthV2 failed to credentialsDataFromDisk), open /home/opuser/.op/1password-credentials.json: permission denied","timestamp":"2022-02-09T11:58:01.882328973Z","level":1}
{"log_message":"(I) ### syncer credentials bootstrap ### ","timestamp":"2022-02-09T11:58:02.882528988Z","level":3}
{"log_message":"(E) Server: (unable to get credentials and initialize API, retrying in 2s), Wrapped: (failed to FindCredentialsUniqueKey), Wrapped: (failed to loadCredentialsFile), Wrapped: (LoadLocalAuthV2 failed to credentialsDataFromDisk), open /home/opuser/.op/1password-credentials.json: permission denied","timestamp":"2022-02-09T11:58:02.882733291Z","level":1}