Use automated database backups

* Add a new psql container that takes care of dumping the db data on specified intervals
* Closes #4

.example.env

@@ -8,3 +8,12 @@ POSTGRES_PASSWORD=super_secure_password
 KEYCLOAK_TAG=20.0
 KEYCLOAK_USER=admin
 KEYCLOAK_PASSWORD=u_will_never_guess
+
+# db backups
+BACKUP_SCHEDULE="@every 6h"
+BACKUP_DIR=/db-backups
+BACKUP_KEEP_DAYS=7
+BACKUP_KEEP_WEEKS=4
+BACKUP_KEEP_MONTHS=6
+BACKUP_SUFFIX=.sql.gz
+TZ=Europe/Vienna

docker-compose.yml

@@ -43,6 +43,27 @@ services:
       - ./cli/json-logging.cli:/opt/jboss/startup-scripts/json-logging.cli
       - ./export:/tmp
 
+  pg-backups:
+    image: prodrigestivill/postgres-backup-local:${POSTGRES_TAG:-latest}
+    restart: always
+    environment:
+      POSTGRES_HOST: postgres
+      POSTGRES_DB: ${POSTGRES_DB:-keycloak}
+      POSTGRES_USER: ${POSTGRES_USER:-keycloak}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-keycloak}
+      SCHEDULE: ${BACKUP_SCHEDULE:-@daily}
+      BACKUP_DIR: ${BACKUP_DIR:-/backups}
+      BACKUP_KEEP_DAYS: ${BACKUP_KEEP_DAYS:-7}
+      BACKUP_KEEP_WEEKS: ${BACKUP_KEEP_WEEKS:-1}
+      BACKUP_KEEP_MONTHS: ${BACKUP_KEEP_MONTHS:-1}
+      BACKUP_SUFFIX: ${BACKUP_SUFFIX:-.sql.gz}
+      HEALTHCHECK_PORT: 8080
+      TZ: ${TZ:-Europe/Vienna}
+    depends_on:
+      - postgres
+    volumes:
+      - /var/opt/pg-backups:${BACKUP_DIR:-/backups}
+
 networks:
   default:
     driver: bridge