♻️ Optimize Dockerfile

- add all non-essential files to .dockerignore
- improve cachability by layers
- re-order lines to reduce layer generation

.dockerignore

@@ -1,2 +1,11 @@
+.browserslistrc
+.dockerignore
+.drone.yml
+.editorconfig
 .git
+.gitignore
+.reuse
+Dockerfile
+LICENSES
+README.md
 node_modules

Dockerfile

@@ -4,17 +4,25 @@
 
 FROM node:14-alpine as builder
 
-COPY . ./
+COPY package.json package-lock.json .
+RUN npm install
+
+COPY .eslintrc.js .
+COPY babel.config.js .
+COPY public public
+COPY src src
 
 RUN npm ci && npm run build
 
 
 FROM nginx as ki-frontend
 
-COPY --from=builder /dist/ /usr/share/nginx/html/
-COPY etc/nginx/conf.d/default.conf /etc/nginx/conf.d/default.conf
-
 LABEL org.opencontainers.image.source=https://git.wtf-eg.de/kompetenzinventar/ki-frontend.git
 LABEL org.opencontainers.image.url=https://git.wtf-eg.de/kompetenzinventar/ki-frontend
 LABEL org.opencontainers.image.documentation=https://git.wtf-eg.de/kompetenzinventar/ki-frontend#docker
 LABEL org.opencontainers.image.vendor="WTF Kooperative eG"
+
+WORKDIR /usr/share/nginx/html
+
+COPY etc/nginx/conf.d/default.conf /etc/nginx/conf.d/default.conf
+COPY --from=builder /dist .