fix(thelounge): handle reverse proxy

Signed-off-by: Matej Focko <me@mfocko.xyz>

roles/thelounge/defaults/main.yml

@@ -0,0 +1,10 @@
+---
+# Defines whether TheLounge is deployed behind a reverse proxy
+# if so, installs the nginx config file
+thelounge_reverse_proxy: true
+
+# Subdomain to be used for the reverse proxy configuration
+thelounge_subdomain: lounge
+
+# HTTP port that's both exposed by container and used by the reverse proxy
+thelounge_http_port: 9000

roles/thelounge/tasks/main.yml

@@ -9,6 +9,16 @@
     - thelounge.container
     - thelounge.volume
 
+- name: Install the reverse proxy config
+  ansible.builtin.template:
+    src: templates/nginx.conf
+    dest: "/etc/nginx/conf.d/thelounge.conf"
+    mode: 0644
+    owner: root
+    group: root
+  when: thelounge_reverse_proxy
+  notify: Restart nginx
+
 - name: Enable the TheLounge quadlet
   ansible.builtin.systemd_service:
     daemon_reload: true

roles/thelounge/templates/nginx.conf

@@ -0,0 +1,18 @@
+# {{ ansible_managed }}
+
+upstream thelounge {
+    server 127.0.0.1:{{ thelounge_http_port }};
+}
+
+server {
+    listen 443 ssl http2; # managed by Certbot
+    listen [::]:443 ssl http2; # managed by Certbot
+
+    include ssl.conf;
+    server_name {{ thelounge_subdomain }}.{{ host_fqdn }};
+
+    location ~ / {
+        include proxy.conf;
+        proxy_pass http://thelounge;
+    }
+}

roles/thelounge/templates/thelounge.container

@@ -7,7 +7,7 @@ Description=The Lounge
 ContainerName=thelounge
 Image=ghcr.io/thelounge/thelounge:latest
 
-PublishPort=9000:9000
+PublishPort={{ thelounge_http_port }}:9000
 
 Volume=thelounge-data:/var/opt/thelounge