diff --git a/.config/dtool/markdownlint/Dockerfile b/.config/dtool/markdownlint/Dockerfile
new file mode 100644
index 0000000..0267c28
--- /dev/null
+++ b/.config/dtool/markdownlint/Dockerfile
@@ -0,0 +1,8 @@
+FROM node:alpine
+
+ARG UID=1000
+
+RUN set -ex \
+ && yarn --cwd /tmp global add markdownlint-cli
+
+ENTRYPOINT ["markdownlint"]
diff --git a/.zsh/config.sh b/.zsh/config.sh
index b0c79fd..15adacc 100644
--- a/.zsh/config.sh
+++ b/.zsh/config.sh
@@ -48,6 +48,7 @@ alias htpasswd='python3 -c "import crypt; import sys; print(crypt.crypt(sys.argv
 alias just='just --no-dotenv'
 alias l='ls --git -lg'
 alias ls='/usr/bin/exa'
+alias markdownlint='dtool markdownlint'
 alias mqttcli='vault2env --key=secret/private/mqttcli -- mqttcli'
 alias mysql='docker run --rm -ti -v $(pwd):$(pwd) -w $(pwd) mysql bash'
 alias mysqlpw='python3 -c "import hashlib; import sys; print(\"*{}\".format(hashlib.sha1(hashlib.sha1(sys.argv[1].encode(\"utf-8\")).digest()).hexdigest().upper()))"'