Remove tmp path when building docker (#90)

Author: mrproliu

.github/workflows/publish-docker.yaml

@@ -45,4 +45,4 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Build and push docker images
-        run: make docker docker.push
+        run: make docker.push

scripts/build/bash/btfgen.sh

@@ -47,4 +47,7 @@ each_all_bpf_so_file() {
 
 ${TMPDIR}/btfhub/tools/btfgen.sh -a ${ARCH} $(each_all_bpf_so_file $FROM)
 mkdir -p ${OUTPUT}
-cp -r ${TMPDIR}/btfhub/custom-archive/* ${OUTPUT}
+cp -r ${TMPDIR}/btfhub/custom-archive/* ${OUTPUT}
+
+# remove the btfhub for save the space
+rm -rf $TMPDIR/btfhub