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

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

@@ -11,6 +11,11 @@ services:
       - data:/var/www/html
 {% include 'templates/docker/container/depends-on-just-database.yml.j2' %}
 {% include 'templates/docker/container/networks.yml.j2' %}
+    healthcheck:
+      test: ["CMD", "bash", "-c", "exec 3<>/dev/tcp/localhost/80 && 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' %}
   data:

roles/docker-matomo/templates/env.j2

@@ -1,3 +1,6 @@
+# Environment File for Matomo 
+# @see https://hub.docker.com/_/matomo/
+
 MATOMO_DATABASE_HOST=     "{{database_host}}:{{database_port}}"
 MATOMO_DATABASE_ADAPTER=  "mysql"
 MATOMO_DATABASE_USERNAME= "{{database_username}}"