bugfix: do not use dockerbuild for auto gen screenshot

docs/Dockerfile

-# TODO using dockerfile will not work for readthedocs ... 
-# need to consider how to build for read the docs
-
-FROM xgui3783/pptr-docker:4383e79bc83452e4bdaf098039635c36c55ffb8f as img_autogen
-COPY . /iav
-WORKDIR /iav
-
-# build aot first && install webdriver & pptr
-RUN npm i 
-
-# build-aot
-RUN npm run build-aot
-
-# for selenium web driver
-# RUN apt-get update && apt-get install default-jre -y
-
-# update webdriver
-RUN npm run wd -- update --versions.chrome=80.0.3987.106
-
-# install pptr
-RUN npm i --no-save puppeteer@2.1.0
-
-# install deploy folder
-RUN cd deploy && \
-    npm i
-
-# auto generate screenshots
-RUN npm run e2e -- --specs ./e2e/screenshots/gen.js
-
-
 FROM python:3.7 as builder
 
 COPY . /iav
 WORKDIR /iav
 
-RUN pip install mkdocs mkdocs-material mdx_truly_sane_lists
-
-COPY --from=img_autogen /iav/docs/autogen_images /iav/docs/autogen_images
+RUN pip install mkdocs mkdocs-material mdx_truly_sane_lists errandkun
 
 RUN mkdocs build
 

mkdocs.yml

@@ -14,6 +14,16 @@ markdown_extensions:
   - footnotes
   - mdx_truly_sane_lists
 
+plugins:
+  - search
+  - errandkun:
+      extract_path: docs/autogen_images
+      external_resources:
+      - type: github
+        owner: fzj-inm1-bda
+        repo: interactive-viewer
+        workflow_name: e2e
+
 pages:
   - Home: 'index.md'
   - System requirements: 'requirements.md'