SELinux flag :z blocks access to postgres service

A dockerized installation of cookiecutter-django on MXLinux 25.1 (a debian-derived distro)

• Docker version 29.5.2, build 79eb04c
• python3.14
• Docker Compose version v2.38.1-desktop.1
• Cookiecutter 2.6.0 from /usr/lib/python3/dist-packages (Python 3.13.5 (main, May 5 2026, 21:05:52) [GCC 14.2.0])

The default installation of the django service with docker-compose.local.yml (development environment) is:

django: build: context: . dockerfile: ./compose/production/django/Dockerfile image: my_awesome_project_local_django container_name: my_awesome_project_local_django depends_on: - postgres - mailpit volumes: - /app/.venv - .:/app:z <---- source of error env_file: - ./.envs/.local/.django - ./.envs/.local/.postgres ports: - '8000:8000' command: /start

Running docker compose gives this error:

my_awesome_project_local_postgres LOG: database system is ready to accept connections

my_awesome_project_local_django | wait-for-it: waiting 30 seconds for postgres:5432 my_awesome_project_local_django | wait-for-it: timeout occurred after waiting 30 seconds for postgres:5432 my_awesome_project_local_django exited with code 124.

Removing the :z flag corrects the error.

Amended code:

django: build: context: . dockerfile: ./compose/production/django/Dockerfile image: my_awesome_project_local_django container_name: my_awesome_project_local_django depends_on: - postgres - mailpit volumes: - /app/.venv - .:/app <--- amendment env_file: - ./.envs/.local/.django - ./.envs/.local/.postgres ports: - '8000:8000' command: /start