diff --git a/.runner/publish.sh b/.runner/publish.sh
index 0628d57..e8a3714 100755
--- a/.runner/publish.sh
+++ b/.runner/publish.sh
@@ -48,15 +48,14 @@ if [ ! -f "${EXE_DIR}/simple_object_storage.arm64" ]; then
     die "arm64 executable not found"
 fi
 
-# if the builder doesn't exist, create it
-if ! docker buildx ls | grep -q "sos-builder"; then
-    docker buildx create --name sos-builder --use
-else
-    docker buildx use sos-builder
+# clean sos builder.
+if docker buildx ls | grep -q "sos-builder"; then
+    docker buildx rm sos-builder
 fi
+docker buildx create --name sos-builder --use
 
 echo "Building multi-platform Docker image"
-docker buildx build --push -t gitea.jde.nz/public/simple-object-storage:latest --platform linux/amd64,linux/arm64 .
+docker buildx build --no-cache --push -t gitea.jde.nz/public/simple-object-storage:latest --platform linux/amd64,linux/arm64 .
 
 echo "Build completed successfully!"
 
diff --git a/test-docker.sh b/test-docker.sh
index a870e1d..ce9dc44 100755
--- a/test-docker.sh
+++ b/test-docker.sh
@@ -51,7 +51,7 @@ title "Building amd64 executable"
 #------------------------------------------------------------------------------------------------
 # build the docker image
 title "Building docker image"
-docker buildx build --load -t gitea.jde.nz/public/simple-object-storage:test --platform linux/amd64 "${SCRIPT_DIR}"
+docker buildx build --no-cache --load -t gitea.jde.nz/public/simple-object-storage:test --platform linux/amd64 "${SCRIPT_DIR}"
 
 #------------------------------------------------------------------------------------------------
 # run the docker container