Update docker file and gitlab-ci

.gitlab-ci.yml

+image: docker:latest
+
 services:
   - docker:dind
 
-variables:
-  IMAGE_TAG: $CI_REGISTRY/$CI_IMAGE:$CI_COMMIT_REF_NAME
-  LATEST_TAG: $CI_REGISTRY/$CI_IMAGE:latest
-
-cache:
-  paths:
-  - node_modules/
+before_script:
+  - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
 
-build:
+build-master:
+  stage: build
+  script:
+    - docker build --pull -t "$CI_REGISTRY_IMAGE" .
+    - docker push "$CI_REGISTRY_IMAGE"
   only:
     - master
-  image: docker:latest
-  services:
-  - docker:dind
+
+build:
   stage: build
   script:
-   - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY
-   - docker build -t $IMAGE_TAG .
-   - docker tag $IMAGE_TAG $LATEST_TAG
-   - docker push $IMAGE_TAG
-   - docker push $LATEST_TAG
-
-test:
-  stage: test
+    - docker build --pull -t "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG" .
+    - docker push "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG"
   only:
-    - sowhereinthefuture
-  image: $LATEST_TAG
-  before_script:
-    - export NODE_ENV=dev && npm install
-  script:
-    - npm run test
\ No newline at end of file
+    - tags

Dockerfile

-FROM node:8-alpine
+FROM node:10-slim
 
 # add basic libs
-RUN apk --no-cache add \
+RUN apt-get update && apt-get install -y  \
       bash \
       g++ \
+      gcc \
       ca-certificates \
-      lz4-dev \
-      musl-dev \
-      cyrus-sasl-dev \
-      openssl-dev \
       make \
       python \
       bash \
       git
 
-RUN apk add --no-cache --virtual .build-deps gcc zlib-dev libc-dev bsd-compat-headers py-setuptools libexecinfo libexecinfo-dev
-
 # Create app directory
 RUN mkdir -p /usr/local/app
 
@@ -34,4 +29,4 @@ RUN npm install
 RUN npm run build
 
 # run app
-CMD node dist/index.js
\ No newline at end of file
+CMD node dist/index.js