add: start keycloak exo

core/caddy/config/sites/keycloak.caddy

@@ -0,0 +1,3 @@
+http://keycloak.ft-chatons.local {
+
+}

core/keycloak/compose.yml

@@ -0,0 +1,15 @@
+services:
+  keycloack:
+    image: quay.io/keycloak/keycloak
+    container_name: keycloak
+    environment:
+      KC_DB: postgres
+      KC_DB_URL: postgres:3212
+      KC_DB_USERNAME: bapasqui
+      KC_DB_PASSWORD: password
+    restart: unless-stopped
+
+networks:
+  proxy:
+    name: proxy
+    external: true