Mr prepare docker image

docker/Dockerfile

+FROM ubuntu:22.04
+
+RUN export DEBIAN_FRONTEND=noninteractive; apt-get update; apt-get -y install \
+    libnode-dev \
+    node-gyp \
+    libssl-dev \
+    npm
+
+RUN npm install -g acorn

.gitlab-ci.yml

 include:
 - project: 'dss-oe/helpers'
-  file: 'ci/templates/ci-template.yml'
+  file: 'ci/templates/dss-oe.yml'
+
+stages:
+  - build-image
+  - build
+
+build-image:
+  stage: build-image
+  script:
+    - docker image rm dss-add-ons/acorn-lint || true
+    - docker build -t acorn-lint docker
+    - docker tag acorn-lint git.digitalstrom.org:4567/dss-add-ons/user-defined-states/acorn-lint
+    - docker push git.digitalstrom.org:4567/dss-add-ons/user-defined-states/acorn-lint
+  tags:
+    - helpers
 
 build:
-  extends: .ds485stack
+  stage: build
+  image: git.digitalstrom.org:4567/dss-add-ons/user-defined-states/acorn-lint
   script:
-    - sudo apt-get update
-    - sudo apt-get -y install libnode-dev node-gyp libssl-dev
-    - sudo apt -y install npm
-    - sudo npm install -g acorn
     - find ./ -name "*\.js" -exec acorn --silent {} \;