Optimized LDAP integration, keycloak realm import and health checks for docker images

roles/docker-peertube/templates/docker-compose.yml.j2

@@ -16,6 +16,12 @@ services:
       - config:/config
 {% include 'templates/docker/container/depends-on-database-redis.yml.j2' %}
 {% include 'templates/docker/container/networks.yml.j2' %}
+    healthcheck:
+      # This just tests if the service is running on port 9000. It doesn't check if there is an 200 or e.g. an 404 response
+      test: ["CMD", "bash", "-c", "exec 3<>/dev/tcp/localhost/9000 && echo -e 'GET / HTTP/1.1\\r\\nHost: localhost\\r\\nConnection: close\\r\\n\\r\\n' >&3 && cat <&3 | grep -q 'HTTP/1.1'"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
 
 {% include 'templates/docker/compose/volumes.yml.j2' %}
   assets: