Allow configuration via environment variables.

.env.sample

@@ -1,8 +1,20 @@
 TYPE=fluffychat
 
 DOMAIN=fluffychat.example.com
-
 ## Domain aliases
 #EXTRA_DOMAINS=', `www.fluffychat.example.com`'
-
 LETS_ENCRYPT_ENV=production
+
+COMPOSE_FILE="compose.yml"
+
+# Single Sign-On using traefik-forward-auth
+#TFA_MIDDLEWARE_NAME="keycloak"
+#COMPOSE_FILE="$COMPOSE_FILE:compose.sso.yml"
+
+# User configuration
+
+# Tab labels etc.
+FLUFFY_APPLICATION_NAME=FluffyChat
+
+# What the homeserver at the login screen defaults to
+FLUFFY_DEFAULT_HOMESERVER=matrix.example.com

compose.sso.yml

@@ -0,0 +1,8 @@
+version: "3.8"
+services:
+  app:
+    environment:
+      - TFA_MIDDLEWARE_NAME
+    deploy:
+      labels:
+        - "traefik.http.routers.${STACK_NAME}.middlewares=${TFA_MIDDLEWARE_NAME}@file"

compose.yml

@@ -4,8 +4,14 @@ version: "3.8"
 services:
   app:
     image: git.coopcloud.tech/coop-cloud/fluffychat:v1.7.1
+    environment:
+      - FLUFFY_APPLICATION_NAME
+      - FLUFFY_DEFAULT_HOMESERVER
     networks:
       - proxy
+    configs:
+      - source: config_json
+        target: /usr/share/nginx/config.json
     deploy:
       restart_policy:
         condition: on-failure
@@ -30,3 +36,9 @@ services:
 networks:
   proxy:
     external: true
+
+configs:
+  config_json:
+    name: ${STACK_NAME}_config_json_${CONFIG_JSON_VERSION}
+    file: config.json.tmpl
+    template_driver: golang

config.json.tmpl

@@ -0,0 +1,10 @@
+{
+  "application_name": "{{ env "FLUFFY_APPLICATION_NAME" }}",
+  "application_welcome_message": null,
+  "default_homeserver": "{{ env "FLUFFY_DEFAULT_HOMESERVER" }}",
+  "web_base_url": "https://{{ env "DOMAIN" }}/",
+  "privacy_url": "https://{{ env "DOMAIN" }}/en/privacy.html",
+  "render_html": false,
+  "hide_redacted_events": false,
+  "hide_unknown_events": false
+}