Traefik v2 enable HSTS, Docker and nextcloud

This took me days to figure out how to configure Traefik v2. Here it is for posterity.

This is a docker-compose.yaml fragment to append to a service section:

labels: - "traefik.enable=true" - "traefik.http.routers.service.rule=Host(`www.example.com`)" - "traefik.http.routers.service.entrypoints=websecure" - "traefik.http.routers.service.tls.certresolver=myresolver" - "traefik.http.middlewares.servicests.headers.stsincludesubdomains=false" - "traefik.http.middlewares.servicests.headers.stspreload=true" - "traefik.http.middlewares.servicests.headers.stsseconds=31536000" - "traefik.http.middlewares.servicests.headers.isdevelopment=false" - "traefik.http.routers.service.middlewares=servicests"

It will:

• tell Traefik to direct traffic for www.example.com to this container,
• on the websecure entrypoint (this is configured statically),
• using the myresolver (for Acme, resolver also configured statically),
• configure middleware to add HSTS headers,
• enable the middleware.

Nextcloud

Here is a slightly more complex example for a nextcloud deployment which includes the recommended redirects.

labels: - "traefik.enable=true" - "traefik.http.routers.nextcloud.rule=Host(`nextcloud.example.com`)" - "traefik.http.routers.nextcloud.entrypoints=websecure" - "traefik.http.routers.nextcloud.tls.certresolver=myresolver" - "traefik.http.middlewares.nextcloudredir.redirectregex.permanent=true" - "traefik.http.middlewares.nextcloudredir.redirectregex.regex=https://(.*)/.well-known/(card|cal)dav" - "traefik.http.middlewares.nextcloudredir.redirectregex.replacement=https://$$1/remote.php/dav/" - "traefik.http.middlewares.nextcloudsts.headers.stsincludesubdomains=false" - "traefik.http.middlewares.nextcloudsts.headers.stspreload=true" - "traefik.http.middlewares.nextcloudsts.headers.stsseconds=31536000" - "traefik.http.middlewares.nextcloudsts.headers.isdevelopment=false" - "traefik.http.routers.nextcloud.middlewares=nextcloudredir,nextcloudsts"