simplify and optimize dockerfile (ref #14)

.dockerignore

@@ -1 +1,3 @@
-node_modules
+node_modules
+.git
+dist

.gitlab-ci.yml

@@ -1,37 +0,0 @@
-image: framasoft/vuefs:latest
-stages:
-  - deploy
-
-pages:
-  stage: deploy
-  script:
-    - yarn install --pure-lockfile
-    - npm run build
-    - rm -r public/ && mv dist/ public/
-  artifacts:
-    paths:
-      - public
-  cache:
-    paths:
-      - node_modules/
-
-production:
-  stage: deploy
-  script:
-    - yarn install --pure-lockfile
-    - npm run build
-    - rm -r public/ && mv dist/ public/
-    - mkdir "${HOME}/.ssh"
-    - chmod 700 "${HOME}/.ssh"
-    - echo -e "${DEPLOYEMENT_KNOWN_HOSTS}" > ${HOME}/.ssh/known_hosts;
-    - eval `ssh-agent -s`
-    - ssh-add <(echo "${DEPLOYEMENT_KEY}" | base64 --decode -i);
-    - cd public && echo "put -r ." | sftp ${DEPLOYEMENT_USER}@${DEPLOYEMENT_HOST}:../../web;
-  only:
-    refs:
-      - master
-    variables:
-      - $DEPLOYEMENT_KEY
-      - $DEPLOYEMENT_KNOWN_HOSTS
-      - $DEPLOYEMENT_USER
-      - $DEPLOYEMENT_HOST

docker/Dockerfile

@@ -1,4 +1,4 @@
-FROM node:10-buster-slim as build-stage
+FROM node:13-alpine as build-stage
 
 WORKDIR /app
 
@@ -6,12 +6,19 @@ COPY package.json .
 RUN yarn install --pure-lockfile \
  && yarn cache clean
 
-# TODO: copy only the required files here
-COPY . .
+COPY src/ src/
+COPY public/ public/
+COPY yarn.lock .
+COPY .eslintrc.js .
+
+# TODO: the build works fine with only the above files, does that mean we can delete everything else?
+
+#COPY vue.config.js .
+#COPY postcss.config.js .
+#COPY .eslintrc .
 
 RUN yarn run build
 
-
 FROM nginx as production-stage
 RUN mkdir /app
 COPY --from=build-stage /app/dist /app