Add EXTRA_DOMAINS, fix service name

See compose-stacks/organising#15

.envrc.sample

@@ -2,6 +2,8 @@ export SERVICE=codimd
 export STACK_NAME=codimd
 
 export DOMAIN=codimd.example.com
+## Domain aliases
+#export EXTRA_DOMAINS=', `www.wordpress.example.com`'
 export LETS_ENCRYPT_ENV=production
 
 export DB_ROOT_PASSWORD_VERSION=v1

compose.yml

@@ -2,7 +2,7 @@
 version: "3.8"
 
 services:
-  codimd:
+  app:
     image: nabo.codimd.dev/hackmdio/hackmd:2.1.0
     environment:
       - CMD_USECDN=false
@@ -31,9 +31,8 @@ services:
       labels:
         - "traefik.enable=true"
         - "traefik.docker.network=proxy"
-        - "traefik.http.routers.${STACK_NAME}.tls=true"
         - "traefik.http.services.${STACK_NAME}.loadbalancer.server.port=3000"
-        - "traefik.http.routers.${STACK_NAME}.rule=Host(`${DOMAIN}`)"
+        - "traefik.http.routers.${STACK_NAME}.rule=Host(`${DOMAIN}`${EXTRA_DOMAINS})"
         - "traefik.http.routers.${STACK_NAME}.tls.certresolver=${LETS_ENCRYPT_ENV}"
         - "traefik.http.routers.${STACK_NAME}.entrypoints=web-secure"
         - "traefik.http.routers.${STACK_NAME}.middlewares=${STACK_NAME}-redirect"