Add docker-compose options for Postgres DB

# Conflicts:
#	docker-compose/docker-compose.yaml

Author: mikeplotean

docker-compose/docker-compose.yaml

@@ -1,4 +1,8 @@
 services:
+  # postgresdb:  # Uncomment to connect a Postgres DB
+  #   image: postgres
+  #   environment:
+  #     POSTGRES_PASSWORD: secret
   wallet-backend:
     image: waltid/wallet-backend:latest
     volumes:

docker-compose/wallet-backend/config/db.conf

@@ -1 +1,2 @@
+# database = "db.postgres"
 database = "db.sqlite"

docker-compose/wallet-backend/config/db.postgres.conf

@@ -0,0 +1,13 @@
+hikariDataSource {
+    jdbcUrl = "jdbc:postgresql://postgresdb:5432/postgres"
+    driverClassName = "org.postgresql.Driver"
+    username = "postgres"
+    password = "secret"
+    transactionIsolation = "TRANSACTION_SERIALIZABLE"
+    maximumPoolSize = 5
+    autoCommit = false
+    dataSource {
+        journalMode = WAL
+        fullColumnNames = false
+    }
+}