📝(self-hosted) add documentation for self-hosting on docker compose

It describes the minimalist LaSuite Meet instance, with the simple
feature of having a room conference.

docs/examples/compose/nginx-proxy/compose.yaml

@@ -0,0 +1,36 @@
+services:
+  nginx-proxy:
+    image: nginxproxy/nginx-proxy
+    container_name: nginx-proxy
+    ports:
+    - "80:80"
+    - "443:443"
+    volumes:
+    - html:/usr/share/nginx/html
+    - certs:/etc/nginx/certs:ro
+    - /var/run/docker.sock:/tmp/docker.sock:ro
+    networks:
+    - proxy-tier
+
+  acme-companion:
+    image: nginxproxy/acme-companion
+    container_name: nginx-proxy-acme
+    environment:
+    - DEFAULT_EMAIL=mail@yourdomain.tld
+    volumes_from:
+    - nginx-proxy
+    volumes:
+    - certs:/etc/nginx/certs:rw
+    - acme:/etc/acme.sh
+    - /var/run/docker.sock:/var/run/docker.sock:ro
+    networks:
+    - proxy-tier
+
+networks:
+  proxy-tier:
+    external: true
+
+volumes:
+  html:
+  certs:
+  acme: