chore: doc: auto-detect current year in generated documentation

and set 2021 in LICENSE

LICENSE

@@ -1,4 +1,4 @@
-   Copyright 2020 OVHcloud
+   Copyright 2021 OVHcloud
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

doc/sphinx/Makefile

@@ -17,6 +17,7 @@ autogenerated: plugins bastion_conf
 default: Makefile
 	@for i in $(VERSION_FILES); do cp $$i $$i.bak; done
 	@sed -i -e "s/__VERSION__/$(VERSION)/g" $(VERSION_FILES)
+	@sed -i -e "s/__YEAR__/$(shell date +%Y)/g" $(VERSION_FILES)
 	@$(SPHINXBUILD) -M html "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
 	@for i in $(VERSION_FILES); do test -e $$i.bak && mv $$i.bak $$i; done
 	@rsync -a --delete _build/html/ ../../docs/

doc/sphinx/conf.py

@@ -20,7 +20,7 @@
 # -- Project information -----------------------------------------------------
 
 project = 'The Bastion'
-copyright = '2020, OVHcloud'
+copyright = '__YEAR__, OVHcloud'
 author = 'The Bastion Authors'
 
 # The short X.Y version