Use smaller container for build

.woodpecker/.build.yml

@@ -1,13 +1,10 @@
 pipeline:
   build:
-    image: node:20.2.0-alpine3.16
+    image: alpine:3.14
     secrets: [docker_password, docker_username]
     commands:
       # Install deps
       - apk add docker docker-compose jq
-      # Build app
-      - yarn install --frozen-lockfile
-      - yarn build
       # Log into docker registry
       - echo "$${DOCKER_PASSWORD}" | docker login --password-stdin --username "$${DOCKER_USERNAME}" git.webdeploy.it
       - echo "TAG=$(jq -r .version ./package.json)" >> .env