fix: migrate to new salt apt repo location

tgallacher · tgallacher · commit ad8068ee3890 · 2025-01-16T15:58:24.000Z
diff --git a/docker/all-in-one/Dockerfile b/docker/all-in-one/Dockerfile
@@ -1,3 +1,4 @@
+# syntax=docker/dockerfile:1.4
 ARG postgres_version=15.1.1.49
 
 ARG pgbouncer_release=1.18.0
