Add basic Docker configuration for Keycloak services

backend/docker/.env

@@ -21,4 +21,14 @@ GRAFANA_VERSION=7.5.5
 GRAFANA_ADMIN_USER=grafana
 GRAFANA_ADMIN_PASSWORD=grafana
 LOKI_VERSION=2.2.1
-PROMTAIL_VERSION=2.2.1
+PROMTAIL_VERSION=2.2.1
+
+KEYCLOAK_VERSION=15.0.0
+KEYCLOAK_USER=keycloak
+KEYCLOAK_PASSWORD=keycloak
+
+KEYCLOAK_DATABASE_NAME=keycloakdb
+KEYCLOAK_DATABASE_USER=keycloakdb
+KEYCLOAK_DATABASE_PASSWORD=keycloakdb
+KEYCLOAK_DATABASE_HOST=keycloakdb
+KEYCLOAK_DATABASE_VENDOR=postgres

backend/docker/docker-compose-keycloak.yml

@@ -0,0 +1,37 @@
+version: '3.3'
+services:
+  keycloak:
+    image: jboss/keycloak:${KEYCLOAK_VERSION}
+    ports:
+      - "9900:8080"
+    environment:
+      - KEYCLOAK_USER=${KEYCLOAK_USER}
+      - KEYCLOAK_PASSWORD=${KEYCLOAK_PASSWORD}
+      - DB_DATABASE=${KEYCLOAK_DATABASE_NAME}
+      - DB_USER=${KEYCLOAK_DATABASE_USER}
+      - DB_PASSWORD=${KEYCLOAK_DATABASE_PASSWORD}
+      - DB_ADDR=${KEYCLOAK_DATABASE_HOST}
+      - DB_VENDOR=${KEYCLOAK_DATABASE_VENDOR}
+    networks:
+      internal:
+    depends_on:
+      - keycloakdb
+
+  keycloakdb:
+    image: postgres:${POSTGRES_VERSION}
+    ports:
+      - "5433:5432"
+    environment:
+      - POSTGRES_USER=${KEYCLOAK_DATABASE_USER}
+      - POSTGRES_PASSWORD=${KEYCLOAK_DATABASE_PASSWORD}
+      - POSTGRES_DB=${KEYCLOAK_DATABASE_NAME}
+    volumes:
+      - keycloak-postgres:/var/lib/postgresql/data
+    networks:
+      internal:
+
+volumes:
+  keycloak-postgres:
+
+networks:
+  internal: