diff --git a/2.build.postgresql.sh b/2.build.postgresql.sh
index 74a859a..f10eedb 100755
--- a/2.build.postgresql.sh
+++ b/2.build.postgresql.sh
@@ -3,5 +3,5 @@ set -euo pipefail
 source ./0.variables.env
 
 docker build \
-  -f "$DIR/Dockerfile" \
+  -f ./config-postgresql/Dockerfile \
   -t "postgres15-$POSTGRESQL_PORT-image" .