## Summary <!-- Briefly summarize the bug --> When using multiple jobs with the same image name but with different "platform" values, it seems that the image hash gets re-used so every job uses the same platform. "pull_policy: always" doesn't change this. This problem only happens if the jobs are run on the same runner, e.g. this kind of caching of the image hash doesn't happen if the jobs are run on different runners. ## Steps to reproduce <!-- What do you need to do to reproduce the bug? Please include job definitions or git repository structure if relevant --> Just build a pipeline with two jobs with different platform options like the one below. They have to run on the same runner. <!-- Please add the definition of the job from `.gitlab-ci.yml` that is failing inside of the code blocks (```) below. --> <details> <summary> .gitlab-ci.yml </summary> ```yml x86: image: name: ubuntu:24.04 docker: platform: amd64 script: - uname -a arm: image: name: ubuntu:24.04 docker: platform: arm64 script: - uname -a ``` </details> ## Actual behavior <!-- What actually happens --> Both "uname -a" commands return the same machine value, eg. "x86_64". ## Expected behavior <!-- What you should see instead --> One job should return "x86_64" and the second one should return "aarch64" as the machine type. ## Relevant logs and/or screenshots <!-- Paste the job logs inside of the code blocks (```) below so it would be easier to read. --> <details> <summary> job log. Despite it saying "Pulling docker image ubuntu:24.04 for platform arm64", it gets run on x86_64. </summary> ```sh Running with gitlab-runner 17.7.0 (3153ccc6) on xxxx, system ID: xxxx Resolving secrets Preparing the "docker" executor 00:05 Using Docker executor with image ubuntu:24.04 ... Pulling docker image ubuntu:24.04 for platform arm64 ... Using docker image sha256:80dd3c3b9c6cecb9f1667e9290b3bc61b78c2678c02cbdae5f0fea92cc6734ab for ubuntu:24.04 with digest ubuntu@sha256:80dd3c3b9c6cecb9f1667e9290b3bc61b78c2678c02cbdae5f0fea92cc6734ab ... Preparing environment 00:01 Running on xxxx via xxxx... Getting source from Git repository 00:02 Fetching changes with git depth set to 20... Reinitialized existing Git repository in xxxx Checking out xxxx as detached HEAD (ref is main)... Skipping Git submodules setup Executing "step_script" stage of the job script 00:01 Using docker image sha256:80dd3c3b9c6cecb9f1667e9290b3bc61b78c2678c02cbdae5f0fea92cc6734ab for ubuntu:24.04 with digest ubuntu@sha256:80dd3c3b9c6cecb9f1667e9290b3bc61b78c2678c02cbdae5f0fea92cc6734ab ... $ uname -a Linux xxxx 6.8.0-51-generic #52-Ubuntu SMP PREEMPT_DYNAMIC Thu Dec 5 13:09:44 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux Cleaning up project directory and file based variables 00:01 Job succeeded ``` </details> ## Environment description <!-- Are you using shared Runners on GitLab.com? Or is it a custom installation? Which executors are used? Please also provide the versions of related tools like `docker info` if you are using the Docker executor. --> It's a local runner installation, Docker version 27.5.0, build a187fa5 <!-- Please add the contents of `config.toml` inside of the code blocks (```) below, remember to remove any secret tokens! --> <details> <summary> config.toml contents </summary> ```toml concurrent = 1 check_interval = 0 connection_max_age = "15m0s" shutdown_timeout = 0 [session_server] session_timeout = 1800 [[runners]] name = "XXXX" url = "XXXX" id = 85 token = "XXXX" token_obtained_at = XXXX token_expires_at = 0001-01-01T00:00:00Z executor = "docker" output_limit = 100000 [runners.custom_build_dir] [runners.cache] MaxUploadedArchiveSize = 0 [runners.cache.s3] [runners.cache.gcs] [runners.cache.azure] [runners.docker] tls_verify = false image = "ubuntu" privileged = false disable_entrypoint_overwrite = false oom_kill_disable = false disable_cache = false volumes = ["/cache"] shm_size = 0 network_mtu = 0 ``` </details> ### Used GitLab Runner version <!-- Please run and paste the output of `gitlab-runner --version`. If you are using a Runner where you don't have access to, please paste at least the first lines the from build log, like: ``` Running with gitlab-ci-multi-runner 1.4.2 (bcc1794) Using Docker executor with image golang:1.8 ... ``` --> Version: 17.7.0 Git revision: 3153ccc6 Git branch: 17-7-stable GO version: go1.23.2 Built: 2024-12-19T20:10:51+0000 OS/Arch: linux/amd64 ## Possible fixes <!-- (If you can, link to the line of code that might be responsible for the problem) --->