Feature/slimmer docker image (#1)

* only download production dependencies for Docker image

* update Dockerfile: place app to /home/node/app

Author: csikb

.dockerignore

@@ -1,6 +1,7 @@
 .angular/cache/
 .circleci/
 node_modules/
+dist/
 .idea/
 .git/
 reports/

Dockerfile

@@ -1,14 +1,21 @@
-FROM node:16-alpine
+FROM node:16-alpine as base
 
 USER node:node
-WORKDIR /home/node
+RUN mkdir /home/node/app
+RUN chown node:node /home/node/app
+WORKDIR /home/node/app
 
 COPY --chown=node ./package*.json ./
-ARG INSTALL_ARGS="--no-fund --no-audit"
+ARG INSTALL_ARGS="--production --no-fund --no-audit"
 RUN npm clean-install $INSTALL_ARGS
 
+FROM base as build
+ARG INSTALL_DEV_ARGS="--no-fund --no-audit"
+RUN npm install $INSTALL_DEV_ARGS
 COPY --chown=node ./ ./
 RUN npm run build:ssr
 
+FROM base as app
+COPY --from=build --chown=node /home/node/app/dist ./dist
 EXPOSE 4000
 ENTRYPOINT npm run serve:ssr