Hi team,
I’m trying to install the Apigee Developer Portal and resolved many issues (composer, memory issues) during the installation. Now I’m facing d__rupal/commerce 2.20.0 requires ext-bcmath * → the requested PHP extension bcmath is missing from your system.__issue issue. Kindly suggest for the solution of this issue or other way to install kick start quickly. Please find the attached below screenshot for your reference.
This is screenshot of the above mentioned issue.
Not a direct answer for your problem, but I suggest to look at those two similar DevPortal Kickstart-based docker Dockerfikes.
https://github.com/micovery/apigee-drupal8-dev-portal
https://github.com/apigee/docker-apigee-drupal-kickstart
Either run them directly, then you can have a working devportal in 10 minutes time or read it as a documentation on installation steps to fix your issues.