Add initial templates for docker-compose services (gitea, nextcloud, traefik)

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

@@ -0,0 +1,20 @@
+version: "3.9"
+
+networks:
+  traefik:
+
+services:
+  traefik:
+    image: traefik:v2.8
+    container_name: traefik
+    restart: unless-stopped
+    ports:
+      - "80:80"
+      - "8080:8080"
+    env_file:
+      - .env.traefik
+    networks:
+      - traefik
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+      - ./traefik.yml:/etc/traefik/traefik.yml:ro

roles/traefik/templates/traefik.yml.j2

@@ -0,0 +1,7 @@
+api:
+  insecure: true
+
+providers:
+  docker:
+    exposedByDefault: false
+    network: traefik_traefik