Bump version, add builds, add setup

.env.example

@@ -25,3 +25,10 @@ ICECAST_MOUNT=/radio
 # OP25 container (usually no need to change)
 OP25_API_URL=http://localhost:8001
 OP25_TERMINAL_URL=http://localhost:8081
+
+# Container registry — set these to pull pre-built images instead of building locally.
+# Must match the DOCKER_ORG variable and repo name configured in Gitea.
+# Leave blank to always build locally.
+IMAGE_REGISTRY=git.vpn.cusano.net
+DOCKER_ORG=
+DOCKER_REPO=