add build manifest

.build.yml

@@ -0,0 +1,19 @@
+image: debian/unstable
+packages:
+  - opam
+  - ocaml
+  - camlp4
+  - curl
+sources:
+  - https://git.zapashcanon.fr/zapashcanon/www.zapashcanon.fr
+tasks:
+  - setup: |
+      opam init -y
+      opam update -y
+      opam install -y stone
+  - build: |
+      eval "$(opam env)"
+      cd www.zapashcanon.fr
+      cd src
+      stone
+      cat site/bookshelf.html | grep Marx > /dev/null

README.md

@@ -0,0 +1 @@
+# www.zapashcanon.fr [![builds.sr.ht status](https://builds.sr.ht/~zapashcanon/www.zapashcanon.fr.svg)](https://builds.sr.ht/~zapashcanon/www.zapashcanon.fr?)