Regarding the "runs just fine", this is not guaranteed. I certainly do check if it is working, and if it is, and it is a small service or just a containerized tool, then I'll use it. Like using GDAL to perform some reprojections and renderings where a throwaway container is called from a shell script, if it works once, I'll keep using it, but I won't use it to run a Python server which also makes use of Matplotlib and other big dependencies.
Regarding the "runs just fine", this is not guaranteed. I certainly do check if it is working, and if it is, and it is a small service or just a containerized tool, then I'll use it. Like using GDAL to perform some reprojections and renderings where a throwaway container is called from a shell script, if it works once, I'll keep using it, but I won't use it to run a Python server which also makes use of Matplotlib and other big dependencies.