package.sh shellcheck and add require check

Signed-off-by: wangqing <wangqing@uniontech.com>

package.sh

@@ -1,23 +1,37 @@
 #!/bin/bash
 
-green="\033[32m"
+check_cmd() {
+    local cmd="$1"
+    if ! command -v "${cmd}" >/dev/null 2>&1; then
+        echo >&2 "I require ${cmd} but it's not installed. Aborting."
+        exit 1
+    fi
+}
+
+green() {
+    printf '\33[1;32m%b\n\33[0m' "$1"
+}
+
+check_cmd yarn
+check_cmd tar
+
 RELEASE=sysomRelease-$(date +"%Y%m%d%H%M%S")
 APIDIR=sysom_api
 WEBDIR=sysom_web
 SCRIPTDIR=script
 TOOLSDIR=tools
 # build web
-pushd sysom_web
+pushd sysom_web || exit
 yarn
 yarn build
-popd
+popd || exit
 
-mkdir -p ${RELEASE}
-cp -r ${APIDIR}/ ${TOOLSDIR}/ ${RELEASE}/
-cp -r ${WEBDIR}/dist/ ${RELEASE}/${WEBDIR}/
-mkdir -p ${RELEASE}/${WEBDIR}/download/
-cp ${TOOLSDIR}/deploy/deploy.sh  ${RELEASE}/
-cp -r ${SCRIPTDIR} ${RELEASE}/
-tar czf ${RELEASE}.tar.gz ${RELEASE}/
-rm -rf ${RELEASE}
-printf "$green The release pacakge is ${RELEASE}.tar.gz\n\033[0m"
+mkdir -p "${RELEASE}"
+cp -r ${APIDIR}/ ${TOOLSDIR}/ "${RELEASE}"/
+cp -r ${WEBDIR}/dist/ "${RELEASE}"/${WEBDIR}/
+mkdir -p "${RELEASE}"/${WEBDIR}/download/
+cp ${TOOLSDIR}/deploy/deploy.sh "${RELEASE}"/
+cp -r ${SCRIPTDIR} "${RELEASE}"/
+tar czf "${RELEASE}".tar.gz "${RELEASE}"/
+rm -rf "${RELEASE}"
+green "The release pacakge is ${RELEASE}.tar.gz"