ci: add full-node tests (#920)

diff --git a/.markdownlint-cli2.jsonc b/.markdownlint-cli2.jsonc
new file mode 100644
index 0000000..c198e0b
--- /dev/null
+++ b/.markdownlint-cli2.jsonc
@@ -0,0 +1,9 @@
+{
+  "ignores": [
+    "docs/static/*.png",
+  ],
+  "outputFormatters": [
+    [ "markdownlint-cli2-formatter-junit", { "name": "junit.xml" } ],
+    [ "markdownlint-cli2-formatter-default" ]
+  ]
+}