Install goat

Author: rfc2822

.github/workflows/build-rfc.yml

@@ -23,7 +23,11 @@ jobs:
           key: webdav-push.mkd
 
       - name: Install packages
-        run: sudo gem install kramdown-rfc && sudo apt-get install --no-install-recommends -y xml2rfc
+        run: >
+          sudo apt-get install --no-install-recommends -y golang-go xml2rfc
+          sudo gem install kramdown-rfc
+          sudo pip3 install svgcheck --break-system-packages
+          go install github.com/blampe/goat/cmd/goat@latest
 
       - name: Prepare output directory
         run: mkdir build