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git-sign: restore workspace ownership after running the signing container #122

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git-sign: restore workspace ownership after running the signing container #122

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21 changes: 21 additions & 0 deletions git-sign/action.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -29,3 +29,24 @@ runs:
${ECR_REGISTRY}/${ECR_REPOSITORY} \
/bin/bash -c "git config --global --add safe.directory $WORKING_DIR && gpgloader && ${COMMAND}"
shell: bash
# The container runs as root, so any file it creates (git objects, refs,
# worktree files) is owned by root and steps running as the runner user
# cannot write to it afterwards. This surfaces later as
# "insufficient permission for adding an object to repository database
# .git/objects". Hand ownership back using the container itself, which is
# root, so this works on runners without passwordless sudo.
- name: "Restore workspace ownership"
if: always()
env:
ECR_REGISTRY: ${{ inputs.ecr_registry }}
ECR_REPOSITORY: ${{ inputs.ecr_repository }}
run: |
WORKING_DIR=/home/git-checkout
docker run \
--rm \
-v $(pwd):$WORKING_DIR \
-w $WORKING_DIR \
--entrypoint chown \
${ECR_REGISTRY}/${ECR_REPOSITORY} \
-R "$(id -u):$(id -g)" .
shell: bash
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