Add a requirements.txt for Read The Docs

Author: mpilgrem

.readthedocs.yaml

@@ -15,6 +15,6 @@ mkdocs:
   configuration: mkdocs.yml
 
 # Optionally declare the Python requirements required to build your docs
-# python:
-#    install:
-#    - requirements: doc/requirements.txt
+ python:
+    install:
+    - requirements: doc/requirements.txt

doc/requirements.txt

@@ -0,0 +1,13 @@
+# pip requirements file for MkDocs, used by Read The Docs
+#
+# See:
+#
+# The Read The Docs recommendation to 'pin' the MkDocs version used to build
+# documentation:
+# https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html#pinning-dependencies
+#
+# The pip guide to its requirements file format:
+# https://pip.pypa.io/en/stable/reference/requirements-file-format/
+#
+# Version used in the stable branch
+mkdocs==0.17.3