Initial code

.gitlab-ci.yml

+before_script:
+  - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
+
+node-8:
+  stage: build
+  script:
+    - docker build --pull --build-arg NODE_VERSION=8-jessie-slim -t $CI_REGISTRY_IMAGE:8-jessie-slim .
+    - docker push $CI_REGISTRY_IMAGE:8-jessie-slim
+  only:
+    - master

Dockerfile

+FROM node:8-jessie-slim
+
+LABEL com.example.vendor="LakeDrops" \
+      maintainer="juergen.haas@lakedrops.com" \
+      description="Node container with build tools included."
+
+RUN apt-get update -y && \
+    apt-get install -y -q python make g++ && \
+    \
+    apt-get clean && \
+    rm -rf /root/.cache && \
+    rm -rf /var/cache/* && \
+    rm -rf /var/lib/apt/lists/* && \
+    rm -rf /var/log/*