Attempt to fix Doxygen custom theme paths

.github/workflows/doxygen-gh-pages.yml

@@ -23,7 +23,7 @@ jobs:
         shell: bash
 
       - name: Clone Doxygen Awesome theme
-        run: sudo git clone https://github.com/jothepro/doxygen-awesome-css.git
+        run: sudo git clone https://github.com/jothepro/doxygen-awesome-css.git /opt/doxygen-awesome-css
         shell: bash
 
       - uses: DenverCoder1/[email protected]

Doxyfile

@@ -1192,8 +1192,8 @@ HTML_STYLESHEET        =
 # list). For an example see the documentation.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_EXTRA_STYLESHEET  = $(HOME)/doxygen-awesome-css/doxygen-awesome.css \
-                         $(HOME)/doxygen-awesome-css/doxygen-awesome-sidebar-only.css
+HTML_EXTRA_STYLESHEET  = /opt/doxygen-awesome-css/doxygen-awesome.css \
+                         /opt/doxygen-awesome-css/doxygen-awesome-sidebar-only.css
 
 # The HTML_EXTRA_FILES tag can be used to specify one or more extra images or
 # other source files which should be copied to the HTML output directory. Note