~qeef/damn-deploy

Limit finished and snapshot services
Revert "Set shm size for db image"

This reverts commit c8723d5f5f9a701535d603432fd6c9890af60ef0, because it
overloaded production server, which is low-spec (1 CPU, 1 GB RAM).
Upgrade server
Add snapshot service
Set shm size for db image
Limit cpus to 80 % for db, traefik and api services
Limit cpus to 10 % for gen services
Upgrade server
Upgrade server
Upgrade server
Upgrade server
Upgrade server
Add prepare load test to gen docker-compose
Clarify JOSM settings
Upgrade PostGIS version
Add note about DNS records to readme
Improve command to generated passwords
Add journalctl note to readme
Add restore database note
Add BANNER env. variable
Next