Allow to exclude build-args and env vars from cache key #3139
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Description
We are building a system that helps us build docker images inside k8s. We are using kaniko for this purpose. This system is highly interactive as we aim to offer a seamless experience for our end-users. To achieve this, we utilize build caches. However, for every build, we need to generate different build-args and environment variables that cannot be the same each time. Although they change with each build, they do not affect the resulting docker image. Therefore, we require options in kaniko to exclude these build-args and envs from the cache key. If we do not do this, we will experience 100% cache misses, which would be undesirable.
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Release Notes
--exclude-build-arg-from-cache-key
specify build-args that should be excluded from composite cache key--exclude-env-from-cache-key
specify environment variables that should be excluded from composite cache key