Trying.

.drone.yml

@@ -5,7 +5,6 @@ steps:
   - name: build
     image: node:14.20.0-alpine3.16
     commands:
-      - yarn install
-      - yarn global add @vue/cli-service
-      - yarn build
+      - npm install
+      - npm run build
       - vue-cli-service build --mode production

docker/Dockerfile

@@ -0,0 +1,6 @@
+FROM node:14
+
+RUN npm install node-sass
+RUN npm install @vue/cli-service
+
+ENTRYPOINT ["tail", "-f", "/dev/null"]

package.json

@@ -5,6 +5,7 @@
   "scripts": {
     "serve": "vue-cli-service serve",
     "build": "vue-cli-service build",
+    "build:prod": "vue-cli-service build --mode production",
     "lint": "vue-cli-service lint"
   },
   "dependencies": {