test(docker-compose): add optional pgadmin behind profile for zaakbrug postgres db

CONTRIBUTING.md

@@ -56,6 +56,16 @@ For example: `docker-compose -f ./docker-compose.zaakbrug.dev.yml -f ./docker-co
 
 > Note: Database data is not seamlessly shared with the Frank!Runner out-off-the-box. In `src/webapp/META_INF/context.xml` you can comment out the H2 configuration and uncomment the Postgress one. The Frank!Runner will then use the Postgres database used in the docker-compose.
 
+#### PgAdmin4
+To aid with debugging you can use PgAdmin4 to browse/edit the Postgres database. PgAdmin4 is included and pre-configured in `docker-compose.zaakbrug.postgres` and can be enabled by adding `--profile pgadmin` to your `docker-compose up` command.
+
+The PgAdmin4 web-GUI is exposed on port `5050`, so can be accessed with `localhost:5050` or `host.docker.internal:5050`
+
+**default login:**  
+email: `[email protected]`  
+password: `admin` 
+
+For example: `docker-compose -f ./docker-compose.zaakbrug.dev.yml -f ./docker-compose.zaakbrug.postgres.yml --profile pgadmin up --build`
 
 ## docker-compose.zaakbrug.staging.dev
 Contains an instance of OpenZaak specifically configured to act as cache or staging for ZGW to ZDS translations. It shares a network with ZaakBrug, and should be considered a component of the ZaakBrug deployment for when ZGW to ZDS translations are required.

docker-compose.zaakbrug.postgres.yml

@@ -18,6 +18,23 @@ services:
       - zaakbrug-backend
     volumes:
       - zaakbrug-postgres-data:/var/lib/postgresql/data
+
+  zaakbrug-pgadmin:
+    profiles:
+      - pgadmin
+    image: dpage/pgadmin4:${PGADMIN_VERSION:-latest}
+    user: root
+    command: ["/venv/bin/python3", "/pgadmin4/setup.py", "--load-servers", "zaakbrug-pgadmin-conf.json", "--user", "[email protected]"]
+    ports:
+      - 5050:80
+    environment:
+      PGADMIN_DEFAULT_EMAIL: [email protected]
+      PGADMIN_DEFAULT_PASSWORD: admin
+    networks:
+      - zaakbrug-stack
+      - zaakbrug-backend
+    depends_on:
+      - zaakbrug-postgres
 
   zaakbrug:
     environment: 

docker/zaakbrug-postgres/zaakbrug-pgadmin-conf.json

@@ -0,0 +1,22 @@
+{
+    "Servers": {
+        "1": {
+            "Name": "zaakbrug-postgres",
+            "Group": "Servers",
+            "Host": "zaakbrug-postgres",
+            "Port": 5432,
+            "MaintenanceDB": "postgres",
+            "Username": "zaakbrug",
+            "UseSSHTunnel": 0,
+            "TunnelPort": "22",
+            "TunnelAuthentication": 0,
+            "KerberosAuthentication": false,
+            "ConnectionParameters": {
+                "sslmode": "prefer",
+                "connect_timeout": 10,
+                "sslcert": "<STORAGE_DIR>/.postgresql/postgresql.crt",
+                "sslkey": "<STORAGE_DIR>/.postgresql/postgresql.key"
+            }
+        }
+    }
+}