diff --git a/README.md b/README.md
old mode 100644
new mode 100755
diff --git a/build_manager.sh b/build_manager.sh
index ac70b26..0c0feb5 100755
--- a/build_manager.sh
+++ b/build_manager.sh
@@ -210,6 +210,36 @@ function generate_portainer_jwt() {
     curl -d ${payload} -H 'Content-Type: application/json' "http://${address}:9000/api/auth"
 }
 
+function get_portainer_ce_api_reference() {
+    printf "${HIGHLIGHT_COLOR}Get the reference of Portainer CE API${NO_COLOR}\n"
+
+    cd ${WORKDIR}/portainer
+
+    if ! check_branch; then
+        exit;
+    fi
+
+    read -p "Commit(HEAD):" commit
+    if [ -z "$commit" ]; then
+        commit=$(git rev-parse HEAD)
+    fi
+    printf "${HIGHLIGHT_COLOR}Installing github.com/portainer/portainer/api@${commit}${NO_COLOR}\n"
+    
+    output=$(go install github.com/portainer/portainer/api@${commit}) | while IFS= read -r line; do
+        echo "$line"
+    done
+
+    # result="
+    # go: downloading github.com/portainer/portainer/api v0.0.0-20220622202437-f0ca3e63db9d
+    # go: downloading github.com/portainer/portainer v0.6.1-0.20220622202437-f0ca3e63db9d
+    # package github.com/portainer/portainer/api is not a main package
+    # "
+
+    # while IFS= read -r line; do
+    #     echo "$line"
+    # done <<< $(echo ${result})
+}
+
 function menu() {
     PS3='Please select the option: '
     OPTIONS=(
@@ -218,6 +248,7 @@ function menu() {
         'Build Portainer EE/CE Backend'
         'Generate Portainer EE/CE JWT'
         'Run Before Commit [Portainer EE/CE]'
+        'Get Portainer CE API Reference'
         'Run Before Commit [k8s]'
         'Build Portainer Agent'
         'Cleanup Temporary Volume'
@@ -242,6 +273,9 @@ function menu() {
             'Run Before Commit [Portainer EE/CE]')
                 run_before_commit
                 ;;
+            'Get Portainer CE API Reference')
+                get_portainer_ce_api_reference
+                ;;
             'Run Before Commit [k8s]')
                 run_before_commit_k8s
                 ;;