Make build phase of docker image build smaller. Use node user in final image.

Author: John Dillick

.core/reactium-config.js

@@ -420,6 +420,12 @@ module.exports = {
                     destination: '/src/app/main.js',
                     source: '/tmp/update/src/app/main.js',
                 },
+                {
+                    overwrite: true,
+                    version: '>=3.6.0',
+                    destination: '/.dockerignore',
+                    source: '/tmp/update/.dockerignore',
+                },
             ],
             remove: [],
         },

.dockerignore

@@ -1,4 +1,5 @@
 node_modules
+reactium_modules
 npm-debug.log
 Dockerfile*
 docker-compose*

Dockerfile

@@ -13,10 +13,6 @@ COPY package*.json ./
 # Bundle app source
 COPY . .
 
-RUN chown -R node ./
-
-USER node
-
 # Run App build within container context
 RUN npx -p @atomic-reactor/cli arcli install && npm run build
 
@@ -28,10 +24,19 @@ FROM node:lts
 # Create app directory
 WORKDIR /usr/src/app
 
-COPY --from=build /tmp/app/node_modules ./node_modules
+# Includes all build assets
 COPY --from=build /tmp/app/public ./public
-COPY --from=build /tmp/app/build ./build
+
+# Dependencies of server
 COPY --from=build /tmp/app/package.json ./package.json
+COPY --from=build /tmp/app/node_modules ./node_modules
+
+# Includes entire server-side app (including reactium_modules)
+COPY --from=build /tmp/app/build ./build
+
+RUN chown -R node ./
+
+USER node
 
 EXPOSE 3030