Docker install fails on init - ModuleNotFoundError: No module named 'psycopg2'

[FurkanAlev]

Hello,

I am trying to install Tactical RMM using Docker with an external PostgreSQL 16 server, but the installation fails.

The tactical-init container gets stuck in a loop with the message: "waiting for postgresql container to be ready...".

After extensive troubleshooting with Gemini Pro, we ran a Python command inside the tactical-init container and found the root cause:
ModuleNotFoundError: No module named 'psycopg2'

This indicates that the required PostgreSQL driver is missing from the Python environment.

Troubleshooting steps taken:

• Confirmed network connectivity and credentials with a separate psql container on the same network.
• Verified all environment variables in .env and docker-compose.yml.
• Tried both latest and 1.2.0 tags for the VERSION variable.
• Performed a full cleanup (docker compose down, docker volume rm ...) before each attempt to avoid caching issues.

The problem seems to be with the Docker image build.