udocker pull from GCR fails with 'No host part in URL' error

[ed-ma]

Hi there,

I'm encountering an issue with udocker pull when trying to pull from Google Container Registry (GCR). The command fails with a No host part in the URL error.

Basic command tried:

udocker pull gcr.io/cloud-tagging-10302018/gtm-cloud-image:stable 

Full error:

Info: downloading layer sha256:27cf8d2f779da47cf9359659a663b1b25cd92b9232a513bba0e14adb40129ed5
Error: in download: URL rejected: No host part in the URL
Error: in download: URL rejected: No host part in the URL
Error: no files downloaded

Adding --registry in diverse combinations:

udocker pull --registry=https://gcr.io gcr.io/cloud-tagging-10302018/gtm-cloud-image:stable
udocker pull --registry=gcr.io gcr.io/cloud-tagging-10302018/gtm-cloud-image:stable
udocker pull --registry=gcr.io cloud-tagging-10302018/gtm-cloud-image:stable

results in the same error message:

Info: downloading layer sha256:27cf8d2f779da47cf9359659a663b1b25cd92b9232a513bba0e14adb40129ed5
Error: in download: URL rejected: No host part in the URL
Error: in download: URL rejected: No host part in the URL
Error: no files downloaded

podman pull works just fine:

podman pull gcr.io/cloud-tagging-10302018/gtm-cloud-image:stable
Trying to pull gcr.io/cloud-tagging-10302018/gtm-cloud-image:stable...
Getting image source signatures
Copying blob 33e068de2649 done   | 
Copying blob c6b97f964990 done   | 
Copying blob 8ffb3c3cf71a done   | 
Copying blob bfb59b82a9b6 done   | 
Copying blob 7c12895b777b done   | 
Copying blob b6824ed73363 done   | 
Copying blob 5664b15f108b done   | 
Copying blob 27be814a09eb done   | 
Copying blob 4aa0ea1413d3 done   | 
Copying blob da7816fa955e done   | 
Copying blob 9aee425378d2 done   | 
Copying blob 06e8c7084bea done   | 
Copying blob f823d6cf5f75 done   | 
Copying blob 6f971e93c4e2 done   | 
Copying blob c83c31ce41af done   | 
Copying blob 0cb5c07f8edd done   | 
Copying blob b7f0325efe29 done   | 
Copying blob b13c38ebe066 done   | 
Copying blob d2d367155858 done   | 
Copying config 27cf8d2f77 done   | 
Writing manifest to image destination
27cf8d2f779da47cf9359659a663b1b25cd92b9232a513bba0e14adb40129ed5

udocker version:

udocker --version
version: 1.3.17
tarball: https://download.a.incd.pt/udocker/udocker-englib-1.2.11.tar.gz https://raw.githubusercontent.com/jorge-lip/udocker-builds/master/tarballs/udocker-englib-1.2.11.tar.gz
tarball_release: 1.2.11

System:

cat /etc/os-release 
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"

Has anyone encountered this before? Any suggestions would be greatly appreciated!