Fix doc generation and jazzy version (#414)

Author: fabianfett

Diff for: docker/Dockerfile

@@ -19,8 +19,8 @@ RUN apt-get update && apt-get install -y lsof dnsutils netcat-openbsd net-tools
 # ruby and jazzy for docs generation
 RUN apt-get update && apt-get install -y ruby ruby-dev libsqlite3-dev build-essential
 # switch of gem docs building
-RUN echo "gem: --no-document" > ~/.gemrc
-RUN if [ "${ubuntu_version}" != "xenial" ] ; then gem install jazzy -v 0.13.7 ; fi
+RUN if [ "${ubuntu_version}" = "focal" ] ; then echo "gem: --no-document" > ~/.gemrc ; fi
+RUN if [ "${ubuntu_version}" = "focal" ] ; then gem install jazzy ; fi
 
 # tools
 RUN mkdir -p $HOME/.tools

Diff for: scripts/generate_docs.sh

@@ -39,7 +39,7 @@ if [[ "$(uname -s)" == "Linux" ]]; then
   mkdir -p "$root_path/.build/sourcekitten"
   for module in "${modules[@]}"; do
     if [[ ! -f "$root_path/.build/sourcekitten/$module.json" ]]; then
-      "$source_kitten_path/sourcekitten" doc --spm --module-name $module > "$root_path/.build/sourcekitten/$module.json"
+      "$source_kitten_path/sourcekitten" doc --module-name $module > "$root_path/.build/sourcekitten/$module.json"
     fi
   done
 fi