HADOOP-18052. Support Apple Silicon in start-build-env.sh (apache#3817)

Reviewed-by: Wei-Chiu Chuang <[email protected]>

Author: aajisaka

start-build-env.sh

@@ -23,7 +23,7 @@ DOCKER_DIR=dev-support/docker
 DOCKER_FILE="${DOCKER_DIR}/Dockerfile"
 
 CPU_ARCH=$(echo "$MACHTYPE" | cut -d- -f1)
-if [ "$CPU_ARCH" = "aarch64" ]; then
+if [[ "$CPU_ARCH" = "aarch64" || "$CPU_ARCH" = "arm64" ]]; then
   DOCKER_FILE="${DOCKER_DIR}/Dockerfile_aarch64"
 fi