fix: migrate heroku DATABASE_URL environment variable

a60814billy · a60814billy · commit 6f3292c8a376 · 2020-03-02T20:10:28.000+08:00
Signed-off-by: BoHong Li &lt;raccoon@hackmd.io&gt;
diff --git a/app.json b/app.json
@@ -15,6 +15,10 @@
             "description": "Let npm also install development build tool",
             "value": "false"
         },
+        "CMD_DB_URL": {
+            "description": "Database URL",
+            "value": "$DATABASE_URL"
+        },
         "CMD_SESSION_SECRET": {
             "description": "Secret used to secure session cookies.",
             "required": false
