Add containerised build process.

Dependencies

Change contents

• file addition: Dockerfile (----------)
  [1.0]
  + #################################################

  + ARG SourceImage=alpine:latest

  + FROM ${SourceImage} AS build_stage

  + ARG ExternalCheckoutDirectory=.

  +

  + COPY ${ExternalCheckoutDirectory}/ /pijul-vscode

  + WORKDIR /pijul-vscode

  +

  + RUN apk add npm

  + RUN npm install -gD yo generator-code vsce yarn webpack webpack-cli ts-loader

  + RUN yarn

  +

  + RUN vsce package

  +

  + RUN mkdir /built && cp ./*.vsix /built

  +

  + #################################################

  + FROM scratch

  + # Watch trailing slash

  + COPY --from=build_stage /built/ /