Update docsbuild process (#287)

* Add requirements for docbuild process
* Remove rst and build directories on docsbuild

Signed-off-by: Webster Mudge <[email protected]>

Author: wmudge

docsbuild/build.sh

@@ -8,7 +8,7 @@ pushd "$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
 trap "{ popd; }" EXIT
 
 # Create collection documentation into temporary directory
-rm -rf temp-rst
+rm -rf temp-rst rst build
 mkdir -p temp-rst
 chmod og-w temp-rst  # antsibull-docs wants that directory only readable by itself
 antsibull-docs \

docsbuild/requirements.txt

@@ -1,2 +1,5 @@
 
-# Created with antsibull-docs 2.3.1.post0
+antsibull-docs >= 2.0.0, < 3.0.0
+ansible-pygments
+sphinx
+sphinx-ansible-theme >= 0.9.0