Added db configurations and Dockerfile

config/application.json

@@ -2,5 +2,17 @@
   "server": {
     "host": "localhost",
     "port": 8080
+  },
+  "database": {
+    "driver": "postgres",
+    "url": "pgfileserver",
+    "name": "fileserver",
+    "username": "postgres",
+    "password": "postgres"
+  },
+  "minio": {
+    "url": "miniofs",
+    "username": "minioadmin",
+    "password": "minioadmin"
   }
 }