updating dockerfile and creating task to build the image from the host

Dockerfile

@@ -1,22 +1,6 @@
-FROM node:12 as builder
-WORKDIR /app
-
-COPY package.json yarn.lock .yarnrc .npmrc /app/
-COPY .yarn /app/.yarn
-COPY packages /app/packages
-COPY plugins /app/plugins
-
-RUN yarn
-
-COPY lerna.json tsconfig.json .eslintignore .eslintrc.js /app/
-COPY scripts/ /app/scripts
-
-RUN yarn build
-
 FROM nginx:mainline
 
-COPY --from=builder /app/packages/app/build /usr/share/nginx/html
-
+COPY packages/app/build /usr/share/nginx/html
 COPY docker/default.conf.template /etc/nginx/conf.d/default.conf.template
 COPY docker/run.sh /usr/local/bin/run.sh
 CMD run.sh