Add docker build files

.gitlab-ci.yml

+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/
+
+build:
+  image: docker:latest
+  services:
+  - docker:dind
+  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

Dockerfile

+FROM node:8-alpine
+
+# add basic libs
+RUN apk --no-cache add \
+      bash \
+      g++ \
+      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
+
+# Move to the app directory
+WORKDIR /usr/local/app
+
+# copy app to the container
+COPY package.json package-lock.json config.json tsconfig.json /usr/local/app/
+COPY src /usr/local/app/src
+
+# Install dependencies
+RUN npm install
+
+# build stuff
+RUN npm run build
+
+# run app
+CMD node dist/index.js
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