Even between Linux on x86 and Linux on x86. Thing was running fine for months, I make a small change, test, deploy to staging (same machine as prod, so that helped), and suddenly some library deep in the bowels of the app says that it can’t start a thread. Runs on my machine though. Turns out to be some incompatibility that had to be fixed by excluding seccomp. Version updates can be a bitch.
As long as you don’t change host platforms…
There are lots of things that can break in Docker between Windows and Linux. Not to mention ARM and x86
Container: “I want to be built so I can run on any machine!”
Silicon: 😈
Even between Linux on x86 and Linux on x86. Thing was running fine for months, I make a small change, test, deploy to staging (same machine as prod, so that helped), and suddenly some library deep in the bowels of the app says that it can’t start a thread. Runs on my machine though. Turns out to be some incompatibility that had to be fixed by excluding seccomp. Version updates can be a bitch.