feat(Vikunja): Add new service

vikunja/docker-compose.postgres.yml

@@ -0,0 +1,19 @@
+version: "3.8"
+
+# https://vikunja.io/docs/config-options/#database
+
+services:
+  vikunja_api:
+    depends_on:
+      - postgres
+    environment:
+      VIKUNJA_DATABASE_TYPE: ${VIKUNJA_DATABASE_TYPE:-postgres}
+      VIKUNJA_DATABASE_MAXOPENCONNECTIONS: ${VIKUNJA_DATABASE_MAXOPENCONNECTIONS:-100}
+      VIKUNJA_DATABASE_MAXIDLECONNECTIONS: ${VIKUNJA_DATABASE_MAXIDLECONNECTIONS:-50}
+      VIKUNJA_DATABASE_MAXCONNECTIONLIFETIME: ${VIKUNJA_DATABASE_MAXCONNECTIONLIFETIME:-10000}
+      VIKUNJA_DATABASE_SSLMODE: ${VIKUNJA_DATABASE_SSLMODE:-disable}
+
+      VIKUNJA_DATABASE_HOST: ${POSTGRES_CONTAINER_NAME:-postgres}:5432 # Default name is same as ../postgres/docker-compose.yml:8
+      VIKUNJA_DATABASE_DATABASE: ${POSTGRES_DB:?err}
+      VIKUNJA_DATABASE_USER: ${POSTGRES_USER:?err}
+      VIKUNJA_DATABASE_PASSWORD: ${POSTGRES_PASSWORD:?err}