szazeski/checkssl repository overview

checkssl is a simple open source, cross-platform tool to check and validate SSL certificates.

You don't even have to install this app, just call docker run with a domain name or url for it to check.

docker run --rm szazeski/checkssl hub.docker.com

hub.docker.com => 18.210.197.188
 1) *.docker.com expires on 2023-11-30 11:59PM Thu (313.2 days)
 CA-2) Amazon expires on 2025-10-19 12:00AM Sun (1001.2 days)
 CA-3) Amazon Root CA 1 expires on 2037-12-31 1:00AM Thu (5457.3 days)
 CA-4) Starfield Services Root - G2 expires on 2034-06-28 5:39PM Wed (4176.0 days)
[PASS] https://hub.docker.com

You can also add more cli flags like: docker run --rm szazeski/checkssl checkssl.org -days=100 -json

View https://github.com/szazeski/checkssl⁠ to view source code and Dockerfile.

https://www.checkssl.org⁠