Install visual editor from release

Fixes #1

build/Dockerfile

@@ -9,15 +9,15 @@ RUN \
 	unzip && \
  echo "**** Downloading plugins ****" && \
  curl -Ls https://github.com/Chris--S/dokuwiki-plugin-iframe/archive/master.zip --output /tmp/iframe.zip && \
- curl -Ls https://github.com/fablab-luenen/dokuwiki-visual-editor/archive/develop.zip --output /tmp/visual-editor.zip && \
+ curl -Ls https://github.com/fablab-luenen/dokuwiki-visual-editor/zipball/release --output /tmp/visual-editor.zip && \
  echo "**** Extracting plugins ****" && \
  unzip -d /tmp/plugins /tmp/iframe.zip && \
  unzip -d /tmp/plugins /tmp/visual-editor.zip && \
  echo "Tmp plugin dir: " && ls /tmp/plugins && \
  echo "DW plugin dir: " && ls $plugindir && \
  echo "**** Moving plugins ****" && \
  mv /tmp/plugins/dokuwiki-plugin-iframe-master $plugindir/iframe && \
- mv /tmp/plugins/dokuwiki-visual-editor-develop $plugindir/prosemirror && \
+ mv /tmp/plugins/*dokuwiki-visual-editor* $plugindir/prosemirror && \
  echo "Dokuwiki Plugins folder after move: " && ls $plugindir && \
  echo "**** Downloading theme ****" && \
  curl -Ls https://github.com/FabLab-Luenen/dokuwiki-krypton/archive/master.zip --output /tmp/theme.zip && \