Run yarn/npm install if data path has package.json

entrypoint.sh

@@ -2,12 +2,28 @@
 
 set -e
 
-echo "Update caniuse-lite..."
+echo -e "[DONN] Update caniuse-lite...\n"
 npx -yq update-browserslist-db@latest
 
-if [ $1 == "gulp" ]; then
+if [ -f "$DATA_PATH/package.json" ]; then
 
-  cd ${GULP_PATH}
+    if [ -f "$DATA_PATH/yarn.lock" ]; then
+
+        echo -e "\n[DONN] yarn.lock exists, running yarn install...\n"
+        yarn --cwd "${DATA_PATH}" install --frozen-lockfile
+
+    else
+
+        echo -e "\n[DONN] Running npm install...\n"
+        npm --prefix "${DATA_PATH}" --no-audit --no-fund --engine-strict true install
+    fi
+
+fi
+
+if [ "$1" == "gulp" ]; then
+
+  echo -e "\n[DONN] Running Gulp...\n"
+  cd "${GULP_PATH}"
   exec "$@"
 
 else