chore: point datatracker dev db image to nightly github package

[skip ci]

Author: NGPixel

docker/docker-compose.yml

@@ -39,10 +39,10 @@ services:
         # (Adding the "ports" property to this file will not forward from a Codespace.)
 
     db:
-        # image: ghcr.io/ngpixel/datatracker-db:nightly-20211208
-        build:
-            context: ..
-            dockerfile: docker/db.Dockerfile
+        image: ghcr.io/ietf-tools/datatracker-db:latest
+        #  build:
+        #      context: ..
+        #      dockerfile: docker/db.Dockerfile
         restart: unless-stopped
         volumes:
             - mariadb-data:/var/lib/mysql
@@ -65,4 +65,4 @@ services:
     # (Adding the "ports" property to this file will not forward from a Codespace.)
 
 volumes:
-    mariadb-data:
+    mariadb-data: