Description of the feature

It would be nice to be able to forward some environment variables from the untrusted host e.g. by specifying their names in the manifest.
Example use case: providing the application with a ip+port/domain to connect to (which by definition can be manipulated by the untrusted host anyway).

Please note that this is a different feature than `loader.insecure__use_ho

Currently after creating an attestation certificate it just saves it as ./attestation_cert.der.
https://github.com/enigmampc/SecretNetwork/blob/016ed04350a7398836b72fc34dfbdf255008e5f2/cosmwasm/packages/wasmi-runtime/src/registration/offchain.rs#L234

Would be nice to be able to customize this path using an environment variable, like https://github.com/enigmampc/SecretNetwork/blob/016ed04350a

Requested/Suggested feature
Integrate Hadolint into the CI to ease Dockerfile maintenance.

Motivation
With recent work on the Dockerfile for the updated CI, there has been a few respins of the PR that might have been avoided with a Hadolint pass to pick the changes up in one pass, and to pick up any regressions.

Hadolint is available as a binary package, and is also cross-platform