WARNING: THIS IS A MINIMAL TESTING ENVIRONMENT, DO NOT USE IN PRODUCTION
QGIS Server stack example:
$ docker-compose up --scale qgisserver=2 -d
Then:
- 2 instances of QGIS Server are running
- cached data is in
mapproxy/cache_data/countries_cache_EPSG3857
- web client is available on http://localhost:8080/