diff --git a/images/broker/alpine/Dockerfile b/images/broker/alpine/Dockerfile
index 571451ca..64c786bd 100644
--- a/images/broker/alpine/Dockerfile
+++ b/images/broker/alpine/Dockerfile
@@ -34,7 +34,7 @@ RUN set -eux; \
     apk add --virtual .build-deps curl gnupg unzip; \
     curl https://archive.apache.org/dist/rocketmq/${ROCKETMQ_VERSION}/rocketmq-all-${ROCKETMQ_VERSION}-bin-release.zip -o rocketmq.zip; \
     curl https://archive.apache.org/dist/rocketmq/${ROCKETMQ_VERSION}/rocketmq-all-${ROCKETMQ_VERSION}-bin-release.zip.asc -o rocketmq.zip.asc; \
-	curl https://www.apache.org/dist/rocketmq/KEYS -o KEYS; \
+	curl -L https://www.apache.org/dist/rocketmq/KEYS -o KEYS; \
 	\
 	gpg --import KEYS; \
     gpg --batch --verify rocketmq.zip.asc rocketmq.zip; \
@@ -71,4 +71,4 @@ RUN chmod a+x ${ROCKETMQ_HOME}/bin/brokerGenConfig.sh \
 
 WORKDIR ${ROCKETMQ_HOME}/bin
 
-CMD ["/bin/bash", "./brokerStart.sh"]
\ No newline at end of file
+CMD ["/bin/bash", "./brokerStart.sh"]
diff --git a/images/namesrv/alpine/Dockerfile b/images/namesrv/alpine/Dockerfile
index 73c1f18b..64538bf4 100644
--- a/images/namesrv/alpine/Dockerfile
+++ b/images/namesrv/alpine/Dockerfile
@@ -34,7 +34,7 @@ RUN set -eux; \
     apk add --virtual .build-deps curl gnupg unzip; \
     curl https://archive.apache.org/dist/rocketmq/${ROCKETMQ_VERSION}/rocketmq-all-${ROCKETMQ_VERSION}-bin-release.zip -o rocketmq.zip; \
     curl https://archive.apache.org/dist/rocketmq/${ROCKETMQ_VERSION}/rocketmq-all-${ROCKETMQ_VERSION}-bin-release.zip.asc -o rocketmq.zip.asc; \
-	curl https://www.apache.org/dist/rocketmq/KEYS -o KEYS; \
+	curl -L https://www.apache.org/dist/rocketmq/KEYS -o KEYS; \
 	gpg --import KEYS; \
     gpg --batch --verify rocketmq.zip.asc rocketmq.zip; \
     unzip rocketmq.zip; \
diff --git a/images/namesrv/alpine/runserver-customize.sh b/images/namesrv/alpine/runserver-customize.sh
index c05e77ec..17164074 100755
--- a/images/namesrv/alpine/runserver-customize.sh
+++ b/images/namesrv/alpine/runserver-customize.sh
@@ -55,7 +55,15 @@ calculate_heap_sizes()
     case "`uname`" in
         Linux)
             system_memory_in_mb=`free -m| sed -n '2p' | awk '{print $2}'`
+            system_memory_in_mb_in_docker=$(($(cat /sys/fs/cgroup/memory/memory.limit_in_bytes)/1024/1024))
+            if [ $system_memory_in_mb_in_docker -lt $system_memory_in_mb ];then
+              system_memory_in_mb=$system_memory_in_mb_in_docker
+            fi
             system_cpu_cores=`egrep -c 'processor([[:space:]]+):.*' /proc/cpuinfo`
+            system_cpu_cores_in_docker=$(($(cat /sys/fs/cgroup/cpu/cpu.cfs_quota_us)/$(cat /sys/fs/cgroup/cpu/cpu.cfs_period_us)))
+            if [ $system_cpu_cores_in_docker -lt $system_cpu_cores -a $system_cpu_cores_in_docker -ne 0 ];then
+              system_cpu_cores=$system_cpu_cores_in_docker
+            fi
         ;;
         FreeBSD)
             system_memory_in_bytes=`sysctl hw.physmem | awk '{print $2}'`