Update base image of Dockerfile

Author: roschaefer

Dockerfile

@@ -1,27 +1,31 @@
-FROM node:8.9-alpine
+FROM node:alpine
 LABEL Description="This image is used to start the hc-api-feathers" Vendor="Human-Connection gGmbH" Version="1.0" Maintainer="Human-Connection gGmbH ([email protected])"
 
 # expose the app port
 EXPOSE 3030
 
-# override configuration by instance name in docker container
-ENV NODE_APP_INSTANCE=docker
-ENV NODE_ENV=production
-
-# update unix packages
-RUN apk update && apk upgrade
-RUN rm -rf /var/cache/apk/*
-RUN yarn global add pm2
-
 # create working directory
 RUN mkdir -p /API
 WORKDIR /API
 
+# --no-cache: download package index on-the-fly, no need to cleanup afterwards
+# --virtual: bundle packages, remove whole bundle at once, when done
+RUN apk --no-cache --virtual build-dependencies add python make g++
+
+RUN yarn global add pm2
+
 # install app dependencies
 COPY package.json /API
 COPY yarn.lock /API
 RUN yarn install --frozen-lockfile --non-interactive
 
+RUN apk del build-dependencies
+
+# override configuration by instance name in docker container
+ENV NODE_APP_INSTANCE=docker
+# must be after `yarn install`
+ENV NODE_ENV=production
+
 # copy the code to the docker image
 COPY . /API