updates reflecting recent changes to workflow yaml

also, now docs will be built only for the most-recent 5 releases (plus dev and master)

Author: shyamblast

docs/build_docs.sh

@@ -17,22 +17,6 @@ set -x
 #                                 MAIN BODY                                    #
 ################################################################################
 
-###################
-# INSTALL DEPENDS #
-###################
-
-apt-get update
-apt-get -y install git rsync python3-stemmer python3-git python3-pip python3-venv python3-setuptools
-
-# Create a new virtual environment and activate it
-python3 -m venv build_docs_venv
-source build_docs_venv/bin/activate
-
-python3 -m pip install --upgrade -r docs/requirements.txt
-
-# Workaround for github action issue with different user vs owner
-git config --global --add safe.directory `pwd`
-
 #####################
 # DECLARE VARIABLES #
 #####################
@@ -56,8 +40,15 @@ echo "Repo: ${REPO_NAME} - TempDir: ${docroot}"
 # first, cleanup any old builds' static assets
 make -C docs clean
 
-# get a list of branches, excluding 'HEAD' and 'gh-pages'
-versions="`git for-each-ref '--format=%(refname:lstrip=-1)' refs/remotes/origin/ | grep -viE '^(HEAD|gh-pages)$'`"
+# Get all branches excluding HEAD and gh-pages
+all_branches=$(git for-each-ref --format='%(refname:lstrip=-1)' refs/remotes/origin/ | grep -viE '^(HEAD|gh-pages)$')
+# Separate release branches (v#.#.#) and keep only latest 5
+release_branches=$(echo "$all_branches" | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' | sort -V | tail -n 5)
+# Non-release branches
+other_branches=$(echo "$all_branches" | grep -v -E '^v[0-9]+\.[0-9]+\.[0-9]+$')
+# Combine: non-release branches + latest 5 releases
+versions=$(echo -e "${other_branches}\n${release_branches}")
+
 for current_version in ${versions}; do
 
 	# make the current language available to conf.py
@@ -171,9 +162,6 @@ popd # return to main repo sandbox root
 # CLEANUP & EXIT #
 ##################
 
-# Deactivate virtual environment
-deactivate
-
 # exit cleanly
 exit 0