message: doc(RELEASE): Improve documentation for updated Docker images
diff: @@ -18,15 +18,16 @@ Bump `version` in `package.json`.
  ```
  npm run build
  -npm run test
  -rm dist/Pipelines/itkJSPipeline*
  -rm dist/Pipelines/*Test*
  version=6.0.0 # change to correct version
  # Update the default CLI image in src/itk-js-cli.js
  git add -- src/itk-js-cli.js
  git commit -m "feat(itk-js-cli): Update default Docker image for ${version}"
  git add -- package.json package-lock.json
  git commit -m "feat(version): Bump NPM version to ${version}"
  +npm run build
  +npm run test
  +rm dist/Pipelines/itkJSPipeline*
  +rm dist/Pipelines/*Test*
  cp LICENSE README.md package.json dist/
  cd dist
  npm publish
  