feat(campfire): add Docker Compose configuration for Once Campfire service

templates/compose/once-campfire.yaml

@@ -0,0 +1,31 @@
+# documentation: https://github.com/basecamp/once-campfire
+# slogan: Super simple group chat, without a subscription.
+# category: messaging
+# tags: campfire,chat,communication,rails,once,basecamp,37signals
+# logo: svgs/once-campfire.png
+# port: 80
+
+services:
+  campfire:
+    build: https://github.com/basecamp/once-campfire.git#${BRANCH:-main}
+    ports:
+      - "3000:80"
+    restart: unless-stopped
+    volumes:
+      - campfire-storage:/rails/storage
+    environment:
+      SECRET_KEY_BASE: ${SECRET_KEY_BASE} # required, set this to a secure random value
+      VAPID_PUBLIC_KEY: ${VAPID_PUBLIC_KEY}                    # optional, for notifications
+      VAPID_PRIVATE_KEY: ${VAPID_PRIVATE_KEY}                  # optional, for notifications
+      DISABLE_SSL: ${DISABLE_SSL-true}                         # uncomment to disable SSL
+      SSL_DOMAIN: ${SSL_DOMAIN-false}                          # optional, for SSL
+      SKIP_TELEMETRY: ${SKIP_TELEMETRY-true}                   # optional, set to disable telemetry
+      SENTRY_DSN: ${SENTRY_DSN}                                # optional, for error reporting
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost/up"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+volumes:
+  campfire-storage: