Use our Keycloak custom image

We build our custom Keycloak image with our own theme located at https://git.hamburg.ccc.de/CCCHH/oci-images

playbooks/templates/chaosknoten/configs/keycloak/compose.yaml.j2

@@ -22,22 +22,8 @@
 
 services:
   keycloak:
-    build:
-      context: .
-      dockerfile_inline: |
-        FROM quay.io/keycloak/keycloak:25.0 as builder
-
-        ENV KC_DB=postgres
-
-        WORKDIR /opt/keycloak
-        RUN /opt/keycloak/bin/kc.sh build
-
-        FROM quay.io/keycloak/keycloak:25.0
-        COPY --from=builder /opt/keycloak/ /opt/keycloak/
-
-        # Runtime options set in compose directly.
-
-        ENTRYPOINT ["/opt/keycloak/bin/kc.sh"]
+    image: git.hamburg.ccc.de/ccchh/oci-images/keycloak:25.0
+    pull_policy: always
     restart: unless-stopped
     command: start --optimized
     depends_on: