scripts: Add support to build ppc64le binary for release

scripts/build-binary

@@ -59,7 +59,14 @@ function main {
 
 	for os in darwin windows linux; do
 		export GOOS=${os}
-		export GOARCH="amd64"
+		TARGET_ARCHS=("amd64")
+
+		if [ ${GOOS} == "linux" ]; then
+			TARGET_ARCHS+=("ppc64le")
+		fi
+
+		for TARGET_ARCH in "${TARGET_ARCHS[@]}"; do
+			export GOARCH=${TARGET_ARCH}
 
 			pushd etcd >/dev/null
 			GO_LDFLAGS="-s" ./build
@@ -77,6 +84,7 @@ function main {
 				echo "Wrote release/${TARGET}.zip"
 			fi
 		done
+	done
 }
 
 main