Cannot save images locally when tag is too long

[dchw]

Take, for example, this Earthfile:

VERSION 0.6

long-tag:
    FROM alpine:3.16
    RUN echo "hi" > test
    SAVE IMAGE docker.io/this-is-a-super-long-company-name/and-a-super-duper-long-image-name:also-a-very-long-long-long-long-tag-for-reals

It fails with this error:

Error: build target: build main: failed to solve: image pull: 1 error occurred:
        * command failed: docker pull 127.0.0.1:8371/sess-3jrbwgudg3htkxk6z1rz8xghs/pullping:dockeriothisisasuperlongcompanynameandasuperduperlongimagenamealsoaverylonglonglonglongtagforreals-nYUCXTV4HWTYmiMRYFFl9m1yJj9beNnQ: exit status 1: invalid reference format: exit status 1

(https://ci.earthly.dev/logs?logId=a75aa13b-6caf-4a7c-b40b-44bf0c8010ba)

It appears that the additional metadata added to the image tag for the internal registry creates a tag that is too long.

It is possible to workaround this failure with --no-output, or by shortening your tags; but we should have a better way to handle this that doesn't depend on unbounded input from the user.

[dchw]

It has been observed by members of our community that this appears to be a regression in v0.6.20, as this appears to work in v0.6.19.

[dchw]

After further investigation, this regressions was introduced in #1982

[kclejeune]

commenting to mention that I'm encountering this issue as well when pushing images that are tagged with long branch names

[vyas-n]

Hi folks,

I also ran into the same issue using Docker Desktop for macOS with Earthly.
For me, it was this setting that caused the error to appear:

When enabled, it seems to mess with the container registry settings that are incompatible with any recent version of Earthly (I tested with 0.6.14, 0.6.19, & 0.6.22).

Disabling the setting fixed it for me.

[vladaionescu]

Thanks for reporting @vyas-n - that actually seems like a distinct issue. I've opened #2217 to track that separately.

[vladaionescu]

The fix for this is going out in the next release v0.6.25+