Dockerslim comms port and ssl issues while running in Tekton task

Expected Behavior

Image should be optimised and pushed to registry.

Actual Behavior

Dockerfile is failing with ssl issues, even though ports are open and firewall has no restrictions.

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docker-slim[build]: info=probe message='changing continue-after from probe to enter because http-probe is disabled'
cmd=build state=started
cmd=build info=params context=./file=demo1/manifests/ocp4-np1-lz-aws/Dockerfile continue.mode=enter rt.as.user=true keep.perms=true
cmd=build state=building message='building basic image'
cmd=build info=basic.image.info tag=docker-slim-tmp-fat-image.13.20230603123528 dockerfile=demo1/manifests/ocp4-np1-lz-aws/Dockerfile context=.
cmd=build build logs (standard image) ====================
Step 1/6 : FROM quay.apps.lz-np2.ent-ocp4-useast1.aws.internal.das/openshift-base-images/ubi8-nodejs16-oracle-nettools-image-with-certs:latest
---> ee7720cc4911
Step 2/6 : USER root
---> Using cache
---> b28ff6e44cd4
Step 3/6 : COPY ./cacerts/cacerts /etc/pki/ca-trust/extracted/java/cacerts
---> f994e77ffb93
Step 4/6 : COPY ./cacerts/cacerts /usr/share/pki/ca-trust-source/anchors/cacerts
---> 42d01648e776
Step 5/6 : COPY ./cacerts/cacerts /etc/pki/ca-trust/source/anchors/cacerts
---> 8d5e4d861ff3
Step 6/6 : RUN yum install curl -y
---> Running in bb2b58f69a7d
Updating Subscription Management repositories.
Unable to read consumer identity
Subscription Manager is operating in container mode.

This system is not registered with an entitlement server. You can use subscription-manager to register.

Red Hat Universal Base Image 8 (RPMs) - BaseOS 0.0 B/s | 0 B 00:00
Errors during downloading metadata for repository 'ubi-8-baseos-rpms':

• Curl error (6): Couldn't resolve host name for https://cdn-ubi.redhat.com/content/public/ubi/dist/ubi8/8/x86_64/baseos/os/repodata/repomd.xml [Could not resolve host: cdn-ubi.redhat.com]
  Error: Failed to download metadata for repo 'ubi-8-baseos-rpms': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried
  cmd=build end of build logs (standard image) =============

If i remove any RUN command from dockerfile it is giving comms ports error

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docker-slim: message='Github discussions' info='https://github.com/docker-slim/docker-slim/discussions'
docker-slim[build]: info=probe message='changing continue-after from probe to enter because http-probe is disabled'
cmd=build state=started
cmd=build info=params context=./file=demo1/manifests/ocp4-np1-lz-aws/Dockerfile continue.mode=enter rt.as.user=true keep.perms=true
cmd=build state=building message='building basic image'
cmd=build info=basic.image.info tag=docker-slim-tmp-fat-image.12.20230603125012 dockerfile=demo1/manifests/ocp4-np1-lz-aws/Dockerfile context=.
cmd=build state=basic.image.build.completed
cmd=build state=image.inspection.start
cmd=build info=image id=sha256:f946673b3b279928e0ef4a58f1a04e0751664ac27c7050735ceac37dd6a3630d size.bytes=1352761934 size.human=1.4 GB
cmd=build info=image.users exe='root' all='1001,root,1001,root,1001,root,1001,root'
cmd=build info=image.stack index=0 name='slim-tmp-fat-image.13.20230529165610:latest' id='sha256:ee7720cc49118c5a8280baf154006d8ebfeae5866c3897a6400635f61e1a5f34'
cmd=build info=image.stack index=1 name='docker-slim-tmp-fat-image.12.20230603125012:latest' id='sha256:f946673b3b279928e0ef4a58f1a04e0751664ac27c7050735ceac37dd6a3630d'
cmd=build info=image.exposed_ports list='8080'
cmd=build state=image.inspection.done
cmd=build state=container.inspection.start
cmd=build info=container status=created name=dockerslimk_12_20230603125014 id=7d0b000fb36d1a7583452b9ecfc3cc9a30c4c9db91570c434aaf06de25a85260

Steps to Reproduce the Problem

Specifications

• Version: latest
• Platform: Tekton

The issue names no source file or test. Start by reproducing the Tekton task with the supplied Dockerfile, comparing the failing RUN command with the no-RUN case and examining the reported DNS, SSL, and communication-port errors. Done means the image is optimized and pushed without these failures.