diff --git a/build/Dockerfile b/build/Dockerfile
index 098bbf55..219a6434 100644
--- a/build/Dockerfile
+++ b/build/Dockerfile
@@ -1,13 +1,21 @@
 FROM ekidd/rust-musl-builder
 
+#ENV HTTP_PROXY="http://192.168.0.104:8118"
+#ENV HTTPS_PROXY="http://192.168.0.104:8118"
+
+ENV SODIUM_VERS="1.0.15"
+
 # Build a static copy of libsodium.
-RUN VERS=1.0.15 && \
-    cd /home/rust/libs && \
-    curl -LO https://download.libsodium.org/libsodium/releases/libsodium-$VERS.tar.gz && \
-    tar xzf libsodium-$VERS.tar.gz && cd libsodium-$VERS && \
+RUN cd /home/rust/libs && \
+    curl -LO https://download.libsodium.org/libsodium/releases/libsodium-$SODIUM_VERS.tar.gz && \
+    tar xzf libsodium-$SODIUM_VERS.tar.gz && cd libsodium-$SODIUM_VERS && \
     CC=musl-gcc ./configure --prefix=/usr/local/musl && \
     make && sudo make install && \
-    cd .. && rm -rf libsodium-$VERS.tar.gz libsodium-$VERS
+    cd .. && rm -rf libsodium-$SODIUM_VERS.tar.gz libsodium-$SODIUM_VERS
+
+#RUN rustup install nightly
+#RUN rustup default nightly
+#RUN rustup target add x86_64-unknown-linux-musl
 
 ENV SODIUM_STATIC=yes
 ENV SODIUM_LIB_DIR=/usr/local/musl/lib
diff --git a/build/build-release b/build/build-release
index 06b3cf37..0a08e530 100755
--- a/build/build-release
+++ b/build/build-release
@@ -1,5 +1,23 @@
 #!/bin/sh
 
+VERSION="latest"
+ENABLE_GZ=false
+
+while getopts "v:gh" opt; do
+    case $opt in
+        v)
+            VERSION=$OPTARG
+            ;;
+        g)
+            ENABLE_GZ=true
+            ;;
+        h|\?)
+            echo "$0 [-v VERSION] [-g] [-h]"
+            exit 0
+            ;;
+    esac
+done
+
 IMAGE='shadowsocks-rust:latest'
 CUR_DIR=$( cd $( dirname $0 ) && pwd )
 
@@ -9,6 +27,8 @@ SRC_PATH="/home/rust/src"
 CARGO_TARGET_DIR="${SRC_PATH}/build/target"
 LOCAL_USER=$( id -u "$USER" ):$( id -g "$USER" )
 
+TARGET_NAME="x86_64-unknown-linux-musl"
+
 docker run \
     -e CARGO_TARGET_DIR="${CARGO_TARGET_DIR}" \
     -v "${CUR_DIR}"/..:"$SRC_PATH" \
@@ -17,25 +37,23 @@ docker run \
     /bin/bash -c \
     "sudo mkdir -p $CARGO_TARGET_DIR \
         && sudo chown -R rust:rust $CARGO_TARGET_DIR \
-        && cargo build --release \
+        && cargo build --release --target $TARGET_NAME \
         && sudo chown -R $LOCAL_USER $CARGO_TARGET_DIR"
 
-TARGET_NAME="x86_64-unknown-linux-musl"
+
 TARGET_DIR="$CUR_DIR/target/$TARGET_NAME/release/"
 cd "$TARGET_DIR"
 
-VERSION=$1
-if [[ -z "$VERSION" ]]; then
-    VERSION="latest"
-fi
-
 ## Disable OS X ACL file
 export COPYFILE_DISABLE=1
 
-tar -czf "${CUR_DIR}/shadowsocks-${VERSION}-release.${TARGET_NAME}.tar.gz" \
-    "sslocal" \
-    "ssserver" \
-    "ssurl"
+if $ENABLE_GZ; then
+    tar -czf "${CUR_DIR}/shadowsocks-${VERSION}-release.${TARGET_NAME}.tar.gz" \
+        "sslocal" \
+        "ssserver" \
+        "ssurl"
+fi
+
 tar -cJf "${CUR_DIR}/shadowsocks-${VERSION}-release.${TARGET_NAME}.tar.xz" \
     "sslocal" \
     "ssserver" \