improved the doxygen CI

.gitlab-ci.yml

@@ -2,7 +2,7 @@ image: alpine
 
 pages:
   script:
-  - apk update && apk add doxygen graphviz ttf-freefont
+  - apk update && apk add doxygen graphviz ttf-freefont epstopdf
   - doxygen docs/doxygen.conf
   - mv docs/html/ public/
   artifacts:

docs/doxygen.conf

@@ -568,7 +568,7 @@ WARN_LOGFILE           =
 # directories like "/usr/src/myproject". Separate the files or directories
 # with spaces.
 
-INPUT                  = README.md src/ include/
+INPUT                  = LICENSE README.md src/ include/
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is