Use explicit docker image in .readthedocs.yaml

Author: benjaoming

.readthedocs.yaml

@@ -6,14 +6,14 @@
 version: 2
 
 # Set the version of Python and other tools you might need
-# build:
-#   os: ubuntu-22.04
-#   tools:
-#     python: "3.10"
-#     # You can also specify other tool versions:
-#     # nodejs: "16"
-#     # rust: "1.55"
-#     # golang: "1.17"
+build:
+   os: ubuntu-22.04
+   tools:
+     python: "3.10"
+     # You can also specify other tool versions:
+     # nodejs: "16"
+     # rust: "1.55"
+     # golang: "1.17"
 
 # Build documentation in the docs/ directory with Sphinx
 sphinx: