For smaller Docker images, faster execution and to be more portable
Running concurrently 'psu' commands should work now, by creating unique
temporary file names
Added:
- Test PSU with Portainer CE 2.0.1 API
- Test PSU with Portainer CE 2.1.1 API
Changed:
- Use Docker Compose 1.28.3 instead of Docker Compose 1.26.2
- Use Traefik 2.4 instead of Traefik 2.2 for testing
- Upgrade operating system of Docker based images, with Alpine 3.13
Removed:
- Test PSU with Portainer 1.22.2 API
- Test PSU with Portainer 1.23.2 API