Hello, I'm testing the nf-core protein folding prediction pipeline. The container registry is set to `quay.io`, but every time I run the pipeline it fails while resolving the full container path. Has anyone come across this issue before, or does anyone have any idea what might be causing it? I tested with :

Version: 25.10.3 build 10983
  Created: 22-01-2026 15:34 UTC (15:34 BST)
  System: Linux 4.18.0-553.129.1.el8_10.x86_64
  Runtime: Groovy 4.0.28 on OpenJDK 64-Bit Server VM 17.0.14-internal+0-adhoc..src
  Encoding: UTF-8 (ANSI_X3.4-1968)

And here is the Error:

Error executing process > 'NFCORE_PROTEINFOLD:ALPHAFOLD3:RUN_ALPHAFOLD3 (1)'^[[K
^[[K
Caused by:^[[K
  Failed to pull singularity image^[[K
    command: singularity pull  --name nf-core-proteinfold_alphafold3_standard-2.0.0.img.pulling.1782985887441 <docker://nf-core/proteinfold_alphafold3_standard:2.0.0> > /dev/null^[[K
    status : 255^[[K
    hint   : Try and increase singularity.pullTimeout in the config (current is "2h")^[[K
    message:^[[K
      FATAL:   While making image from oci registry: error fetching image to cache: failed to get checksum for <docker://nf-core/proteinfold_alphafold3_standard:2.0.0>: reading manifest 2.0.0 in <http://docker.io/nf-core/proteinfold_alphafold3_standard|docker.io/nf-core/proteinfold_alphafold3_standard>: requested access to the resource is denied^[[K

Hi, @Mira Sarkis! Slack uses channels to organise discussions. Press the

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more option on the left sidebar. Then hover over Your organisation, and finally select Channels to browse. Each nf-core pipeline has it’s own channel (e.g. #CE8SSJV3N). Please post any questions about specific pipelines in the relevant channel. If you’re not sure where to post your message, please ask @mashehu for help.

#C0351A8S487 in your case.

my answer in the issue opened 👉🏻 https://github.com/nf-core/proteinfold/issues/639#issuecomment-4925005415