Add mdbook test [CI SKIP]

test/test_image.sh

@@ -33,6 +33,7 @@ run_image() {
     -e DRONE_BRANCH=$branch \
     -e DRONE_COMMIT=7fd1a60b01f91b314f59955a4e4d4e80d8edf11d \
     --entrypoint '/bin/bash' \
+    --workdir /drone/src \
     --rm codefirst-docdeployer \
     -c "sed -i 's/ssh/ssh -p 2222/g' /entrypoint.sh && sed -i 's/root@nginx/codefirst@nginx/g' /entrypoint.sh && $*"
   docker stop "$nginx_id"
@@ -94,5 +95,16 @@ test_swagger() {
   cleanup
 }
 
+test_mdbook() {
+  run_image master 'mkdir -p doc/src \
+    && touch doc/book.toml \
+    && touch doc/src/index.md \
+    && echo "[Introduction](index.md)" > doc/src/SUMMARY.md \
+    && /entrypoint.sh -l doc -t mdbook'
+  assert_file_exists book/index.html
+  cleanup
+}
+
 test_doxygen
 test_swagger
+test_mdbook