diff --git a/Dockerfile b/Dockerfile
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index 0000000..1977023
--- /dev/null
+++ b/Dockerfile
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+FROM certbot/certbot:v0.38.0
+
+ENV DOMAIN 'undefined'
+ENV EMAIL noreply@qq.com
+
+VOLUME /opt/certbot/config
+
+RUN pip install certbot-dns-hostker
+ENTRYPOINT certbot certonly -n --renew-by-default --email ${EMAIL} --text --agree-tos --authenticator certbot-dns-hostker:dns-hostker --certbot-dns-hostker:dns-hostker-credentials /opt/certbot/config/config.ini -d ${DOMAIN}