Building own image for dex for fixing vulnerabilites

[manish222agr]

Hi,

We are currently using dex 38.0. It has some vulnerabilities related to open ssl, and the alpine linux has resolved this in their new release.

Impacted packages are:

• libcrypto3 3.1.4-r2 need to update to 3.1.4-r5
• libssl3 3.1.4-r2 need to update to 3.1.4-r5

I am planning to do below until we have new version 39.0 of dex.

Clone the dex repo from github.
Have a local copy of dockerfile in our repo.
Change the docker file to have alpine:3.19.1@sha256:6457d53fb065d6f250e1504b9bc42d5b6c65941d57532c072d929dd0628977d0.
Run the docker build providing path to this new local docker file.
Use the image it builds.

Please confirm and let me know if this should work and if I am missing any other steps.

Thanks.