diff --git a/build.sh b/build.sh
index cd07d20..780d6d3 100755
--- a/build.sh
+++ b/build.sh
@@ -2,13 +2,20 @@
 
 set -euo pipefail
 
+function build_image() {
+    local dockerfile="$1"
+    local image_name="${dockerfile//Dockerfile./}"
+    docker build -t "$image_name:latest" -f "$dockerfile" .
+}
+
 # iterate through the docker files in format Dockerfile.IMAGE_NAME
 for dockerfile in Dockerfile.*
 do
-    # get the image name from the dockerfile
-    image_name="${dockerfile//Dockerfile./}"
-    # build the gitea.jde.nz/public/bb64:debian-curl docker image
-    docker build -t "$image_name:latest" -f "$dockerfile" .
+    (
+        build_image "$dockerfile"
+    ) &
 done
 
+wait
+