Migrate Keycloak from ThinkCCCluster onto Chaosknoten

Co-authored-by: Max <max@mlem.cloud>

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

@@ -0,0 +1,75 @@
+## Secrets:
+#
+# Secrets should be provided via the relevant `x_secrets.env` files to the
+# containers. Options to be set are documented by commented out environment
+# variables.
+#
+## Links & Resources:
+#
+# https://www.keycloak.org/
+# https://www.keycloak.org/documentation
+# https://www.keycloak.org/getting-started/getting-started-docker
+# https://www.keycloak.org/server/configuration
+# https://www.keycloak.org/server/containers
+# https://www.keycloak.org/server/configuration-production
+# https://www.keycloak.org/server/db
+# https://hub.docker.com/_/postgres
+# https://github.com/docker-library/docs/blob/master/postgres/README.md
+# https://www.keycloak.org/server/hostname
+# https://www.keycloak.org/server/reverseproxy
+# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Forwarded
+# https://www.keycloak.org/server/all-config
+
+services:
+  keycloak:
+    build:
+      context: .
+      dockerfile_inline: |
+        FROM quay.io/keycloak/keycloak:22.0 as builder
+
+        ENV KC_DB=postgres
+
+        WORKDIR /opt/keycloak
+        RUN /opt/keycloak/bin/kc.sh build
+
+        FROM quay.io/keycloak/keycloak:22.0
+        COPY --from=builder /opt/keycloak/ /opt/keycloak/
+
+        # Runtime options set in compose directly.
+
+        ENTRYPOINT ["/opt/keycloak/bin/kc.sh"]
+    restart: unless-stopped
+    command: start --optimized
+    depends_on:
+      - db
+    networks:
+      - keycloak
+    environment:
+      KEYCLOAK_ADMIN: admin
+      KEYCLOAK_ADMIN_PASSWORD: {{ lookup("community.general.passwordstore", "noc/vm-secrets/chaosknoten/keycloak/KEYCLOAK_ADMIN_PASSWORD", create=false, missing="error") }}
+      KC_DB: postgres
+      KC_DB_URL_HOST: db
+      KC_DB_USERNAME: keycloak
+      KC_DB_PASSWORD: {{ lookup("community.general.passwordstore", "noc/vm-secrets/chaosknoten/keycloak/KC_DB_PASSWORD", create=false, missing="error") }}
+      KC_HOSTNAME: id.ccchh.net
+      KC_HOSTNAME_STRICT_BACKCHANNEL: true
+      KC_HOSTNAME_ADMIN: keycloak-admin.ccchh.net
+      KC_PROXY: edge
+    ports:
+      - "8080:8080"
+
+  db:
+    image: postgres:15.2
+    restart: always
+    networks:
+      - keycloak
+    volumes:
+      - "./database:/var/lib/postgresql/data"
+    environment:
+      POSTGRES_USER: keycloak
+      POSTGRES_PASSWORD: {{ lookup("community.general.passwordstore", "noc/vm-secrets/chaosknoten/keycloak/POSTGRES_PASSWORD", create=false, missing="error") }}
+      POSTGRES_DB: keycloak
+
+networks:
+  keycloak:
+    external: false