diff --git a/.docker/build b/.docker/build
index dc2a016..e2f9d94 100644
--- a/.docker/build
+++ b/.docker/build
@@ -2,11 +2,23 @@
 
 build_ss_libev(){
 	SS_DIR = $BUILD_DIR/shadowsocks-libev
-	apk add build-deps git autoconf automake libtool build-base libev-dev linux-headers libsodium-dev mbedtls-dev pcre-dev c-ares-dev
-	git clone https://github.com/shadowsocks/shadowsocks-libev.git $SS_DIR
-	cd $SS_DIR
-	./autogen.sh && ./configure
-	make && make install
+	set -ex && \
+    apk add --no-cache --virtual .build-deps git autoconf automake libtool build-base libev-dev linux-headers libsodium-dev mbedtls-dev pcre-dev c-ares-dev
+	git clone https://github.com/shadowsocks/shadowsocks-libev $SS_DIR
+    cd $SS_DIR
+	./autogen.sh
+    ./configure --prefix=/usr --disable-documentation
+    make install
+
+    runDeps="$( \
+        scanelf --needed --nobanner /usr/bin/ss-* \
+            | awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
+            | xargs -r apk info --installed \
+            | sort -u \
+    )" 
+    apk add --no-cache --virtual .run-deps rng-tools $runDeps 
+    apk del .build-deps
+    rm -rf $SS_DIR/*
 }
 
 build_obfs(){