Docker Build fails with "CA signature digest algorithm too weak"

Solution Verified - Updated -

Issue

  • When trying to build a custom container image for OpenShift, the build on the OpenShift Container Platform cluster fails with the following error message:

    Updating Subscription Management repositories.
    Unable to read consumer identity
    Repository 'rhel-8-for-x86_64-appstream-rpms' is enabled for this system.
    Repository 'rhel-8-for-x86_64-baseos-rpms' is enabled for this system.
    Updating Subscription Management repositories.
    Unable to read consumer identity
    Red Hat Enterprise Linux 8 for x86_64 - AppStre 0.0  B/s |   0  B     00:00    
    Errors during downloading metadata for repository 'rhel-8-for-x86_64-appstream-rpms':
    - Curl error (60): Peer certificate cannot be authenticated with given CA certificates for https://cdn.redhat.com/content/dist/rhel8/8/x86_64/appstream/os/repodata/repomd.xml [SSL certificate problem: CA signature digest algorithm too weak]
    Error: Failed to download metadata for repo 'rhel-8-for-x86_64-appstream-rpms': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried
    subprocess exited with status 1
    subprocess exited with status 1
    
  • yum install in the Docker Build fails with the above error message.

  • After applying Solution 4244451, builds fail with the above error.

Environment

  • Red Hat OpenShift Container Platform (OCP) 4.5

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