The double-edged sword here is that you can get hit by their stack retirement policies. Cedar-14 was killed this year, and Heroku-16 is gone next year.
For better or for worse, Docker images will continue to run.
For better or for worse, Docker images will continue to run.
"This app is still using the cedar-14 stack, for which the end-of life window has closed as of November 2nd, 2020. The cedar-14 stack will no longer receive security updates and builds will be disabled for apps running on the cedar-14 stack."