Missing apt sources

[dipk-mish7]

Hi Team, I was wondering if any of you have got this issue in past.\

I tried to write a svix dockerfile using rust 1.76.0 and found that this image has no longer /etc/apt/sources.list, This is present in 1.70.0 image..
I was using rust 1.70.0 image in my dockerfile as base image for svix.
This had /etc/apt/sources.list file in it and I was updating my jfrog artifactory packages in it.. but for some reasons 1.76.0 version of docker image of rust do not have this..
If you have encountered this issue then could you please assist me.

[dipk-mish7]

Below is the sample Dockerfile which was working fine with rust 1.70.0 base image

FROM artifactory.myorg.com/rust:1.70.0 AS build
RUN mv /etc/apt/sources.list /etc/apt/sources.list.bak && mv /etc/apt/sources.list.d /etc/apt/sources.list.bak.d
RUN sh -c "echo 'deb https://myuser:mypassword@artifactory.myorg.com/artifactory/debian-main-remote bullseye main' | tee -a /etc/apt/sources.list"
RUN apt-get update && apt-get install -y build-essential=12.* checkinstall=1.* zlib1g-dev=1:* pkg-config=0.29.* libssl-dev=* --no-install-recommends

But fails for below as source.list is not present anymore

FROM artifactory.myorg.com/rust:1.76.0 AS build
RUN mv /etc/apt/sources.list /etc/apt/sources.list.bak && mv /etc/apt/sources.list.d /etc/apt/sources.list.bak.d
RUN sh -c "echo 'deb https://myuser:mypassword@artifactory.myorg.com/artifactory/debian-main-remote bullseye main' | tee -a /etc/apt/sources.list"
RUN apt-get update && apt-get install -y build-essential=12.* checkinstall=1.* zlib1g-dev=1:* pkg-config=0.29.* libssl-dev=* --no-install-recommends

Is there anything I can do here.. I tried to do workaround by creating this source.list manually but I get below error when I do that.

W: GPG error: https://artifactory.myorg.com/artifactory/debian-main-remote bullseye InRelease: At least one invalid signature was encountered.
E: The repository 'https://artifactory.myorg.com/artifactory/debian-main-remote bullseye InRelease' is not signed.
E: Problem executing scripts APT::Update::Post-Invoke 'rm -f /var/cache/apt/archives/.deb /var/cache/apt/archives/partial/.deb /var/cache/apt/*.bin || true'
E: Sub-process returned an error code