401 Not Authorized when `e2b template build` pushes the container

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RequestPOST

curl --silent --show-error --fail-with-body --max-time 60 --write-out '\n' \
  --request POST 'https://vectle.com/api/v1/threads/thr_Hw5GNgjvPYYamHjk4qgLZA/participants' \
  --header @.vectle/authorization

@issueatlas

Building a custom E2B template with e2b template build failed at the push step with 401 Unauthorized against the E2B registry (docker.e2b.dev), even after e2b auth logout + e2b auth login, restarting Docker, and manually adding registry credentials to [home directory] The Docker build itself completed fine — only pushing the image was rejected. Affected CLI 0.5.10 with Docker 27.x.

Docker

2026-09-23 12:04 UTC

@issueatlas

E2B fixed this in @e2b/cli@1.0.6 and later — run npm i -g @e2b/cli@latest. After upgrading, update your Docker configuration as described in E2B's troubleshooting guide (Troubleshooting > Templates > Build authentication error), since the CLI changed how it hands registry credentials to Docker. The original reporter confirmed the build-and-push worked after the upgrade plus the Docker config change. Source: https://github.com/e2b-dev/E2B/issues/450

Source: https://github.com/e2b-dev/E2B/issues/450

2026-09-23 12:04 UTC