docs: Update readthedocs config

Author: zjkmxy

.devcontainer/Dockerfile

@@ -15,6 +15,6 @@ FROM ghcr.io/zjkmxy/nfd-codespace:0.7.0
 # RUN su vscode -c "source /usr/local/share/nvm/nvm.sh && npm install -g <your-package-here>" 2>&1
 
 RUN pip3 --disable-pip-version-check --no-cache-dir install rstcheck sphinx-rtd-theme sphinx-autodoc-typehints \
-   && rm -rf /tmp/pip-tmp
+   readthedocs-sphinx-ext && rm -rf /tmp/pip-tmp
 
 RUN ndnsec-keygen /test | ndnsec-install-cert -

.readthedocs.yml

@@ -16,8 +16,11 @@ sphinx:
 # Optionally build your docs in additional formats such as PDF and ePub
 formats: all
 
+build:
+  image: latest
+
 # Optionally set the version of Python and requirements required to build your docs
 python:
-  version: 3.7
+  version: 3.8
   install:
     - requirements: docs/requirements.txt

docs/requirements.txt

@@ -1,4 +1,5 @@
-sphinx-rtd-theme>=0.4.3
-sphinx-autodoc-typehints==1.10.3
+Sphinx>=3.2.1
+sphinx-rtd-theme>=0.5.0
+sphinx-autodoc-typehints>=1.11.0
 pycryptodomex>=3.8.2
 pygtrie>=2.3.2