Refactor Traefik deploy: docker-compose + systemd

- Replace docker_container ansible with new setup
- Add option to disable HTTPS for alternate reverse proxy use

roles/traefik/templates/compose-env.j2

@@ -0,0 +1,8 @@
+# {{ ansible_managed }}
+traefik_version={{ traefik_version }}
+traefik_name={{ traefik_name }}
+traefik_domain={{ traefik_domain }}
+traefik_dashboard={{ traefik_dashboard | string | lower }}
+traefik_debug={{ traefik_debug | string | lower }}
+traefik_web_entry={{ traefik_web_entry }}
+traefik_websecure_entry={{ traefik_websecure_entry }}

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

@@ -0,0 +1,25 @@
+version: '3.7'
+
+networks:
+  traefik:
+    name: traefik
+
+services:
+  traefik:
+    image: "traefik:${traefik_version}"
+    container_name: "${traefik_name}"
+    ports:
+      - "${traefik_web_entry:-80:80}"
+{% if traefik_standalone and not traefik_http_only %}
+      - "${traefik_websecure_entry:-443:443}"
+{% endif %}
+    networks:
+      - traefik
+    labels:
+      - "traefik.http.routers.traefik.rule=Host(`{{ traefik_domain }}`)"
+      - "traefik.http.routers.traefik.service=api@internal"
+      - "traefik.docker.network=traefik"
+      - "traefik.enable=${traefik_dashboard:-false}"
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+      - "{{ traefik_root }}/config:/etc/traefik"

roles/traefik/templates/traefik.yml.j2

@@ -10,7 +10,7 @@ providers:
 entrypoints:
   web:
     address: ':80'
-{% if traefik_http_redirect is defined and traefik_http_redirect %}
+{% if traefik_http_redirect is defined and traefik_http_redirect and not traefik_http_only %}
     http:
       redirections:
         entrypoint:
@@ -18,10 +18,12 @@ entrypoints:
           scheme: https
           permanent: true
 {% endif %}
+{% if not traefik_http_only is defined or not traefik_http_only %}
   websecure:
     address: ':443'
     http:
       tls: {}
+{% endif %}
 
 {% if traefik_acme_email is defined %}
 certificatesResolvers: