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--- marc:linux:docker [2022/04/19 09:50] – [Github CI/CD:] marcv
+++ marc:linux:docker [2022/04/19 10:03] (current) – [2 phase container building:] marcv
@@ Line 306: / Line 306: @@
 ===== 2 phase container building: =====
+By using a multiphase build we can:
+  - Use multiple images
+  - Reduce space by only copying the needed contents to the final container
 {{:marc:linux:multi_phase_build.png?direct&800|}}
+The __Dockerfile__ would look something like this:
+<code>
+FROM node:alpine as builder        # Using "as" we can tag this phase
+WORKDIR '/app'
+COPY package.json .
+RUN npm install
+COPY . .
+RUN npm run build                  # This creates the content we want to serve in the /app/build directory
+FROM nginx                         # Not using another tag; we differentiate the phases using "FROM"
+COPY --from=builder /app/build /usr/share/nginx/html
+</code>
+Notice we did not define the RUN command; this is not needed as this container will start nginx itself.