-find . -name Dockerfile -exec sed -i -e "s|alpine:3.6|multiarch/alpine:aarch64-v3.6|g" {} +
-find . -name Dockerfile -exec sed -i -e "s|opnfv/functest-core|${repo}/functest-core:aarch64-latest|g" {} +
-for dir in ${aarch64_dirs}; do
- (cd "${dir}" && docker build -t "${repo}/functest-${dir##**/}:aarch64-latest" .)
- docker push "${repo}/functest-${dir##**/}:aarch64-latest"
+find . -name Dockerfile -exec sed -i -e "s|alpine:3.6|multiarch/alpine:arm64-v3.6|g" {} +
+find . -name Dockerfile -exec sed -i -e "s|opnfv/functest-core|${repo}/functest-core:arm64-latest|g" {} +
+if [[ ${arm64_dirs} != *"docker/core"* ]]; then
+ docker pull "${repo}/functest-core:arm64-latest"
+fi
+for dir in ${arm64_dirs}; do
+ (cd "${dir}" && docker build --no-cache -t "${repo}/functest-${dir##**/}:arm64-latest" .)
+ docker push "${repo}/functest-${dir##**/}:arm64-latest"