A docker image that automatically renews letsencrypt certificate using cloudflare dns challenge

Usage

$ docker run -it \
    -v "YOUR_CERTS_DIR:/certs" \
    -v "YOUR_LETSENCRYPT_DIR:/etc/letsencrypt" \
    -e DOMAINS=example.com \
    -e TZ=Australia/Melbourne \
    -e EMAIL=webmaster@example.com \
    -e "CRON=0 0 1 * *" \
    -e TEST_ONLY=false \
    -e "DNS_CLOUDFLARE_API_TOKEN=abcde"
    simophin/certbot-dns-cloudflare:latest

Cert data

Certs will be generated and copied to /certs directory.

You should also mount a volume to /etc/letsencrypt to persist the certbot state.

The environment variables

The table below list available environment variables

Name	Description	Example
DOMAINS	Required. Domain name(s) to obtain the certificate for. Separated by comma	example.com,mydomain.net
TZ	Required. Timezone of the cron expression	Australia/Melbourne
EMAIL	Required. Email address to register with letsencrypt	webmaster@example.com
CRON	Required. Cron expression to run the renewal	weekly: 0 0 1 * *. Refer to Wiki
TEST_ONLY	Required. If set to true, obtain a test (staging) certificate only. Default to true. You need to explicitly set to false to obtain a real certificate	false
DNS_CLOUDFLARE_API_TOKEN	Required. Cloudflare API token. Refer to Cloudflare API Tokens for more information	abc123