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ci(release): create release tags with a deploy key #54

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Merged
jo16oh merged 1 commit into from
Sep 24, 2026
Merged

ci(release): create release tags with a deploy key #54

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17 changes: 13 additions & 4 deletions .github/workflows/release.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -61,8 +61,9 @@ jobs:
needs: verify
if: needs.verify.outputs.due == 'true'
runs-on: ubuntu-latest
environment: release # holds the deploy key that creates the tag
permissions:
contents: write # the tag and the release are created below
contents: write # the release is created below
id-token: write # npm trusted publishing and provenance
env:
TAG: ${{ needs.verify.outputs.tag }}
Expand Down Expand Up @@ -95,11 +96,19 @@ jobs:
- run: vp run ts-compatibility

# Tags are immutable, so tagging only after the checks pass keeps a broken commit from burning
# its version.
# its version. Only deploy keys may create tags (the `tags` ruleset), so the push goes over SSH
# with the `release` environment's key; the agent holding it ends with this step, and the key
# never hits disk.
- name: Create tag
run: gh api "repos/$GITHUB_REPOSITORY/git/refs" -f ref="refs/tags/$TAG" -f sha="$GITHUB_SHA"
run: |
eval "$(ssh-agent -s)" > /dev/null
trap 'ssh-agent -k > /dev/null' EXIT
ssh-add -q - <<< "$RELEASE_TAG_KEY"
curl -fsS https://api.github.com/meta | jq -r '.ssh_keys[] | "github.com \(.)"' > "$RUNNER_TEMP/known_hosts"
git -c core.sshCommand="ssh -o UserKnownHostsFile=$RUNNER_TEMP/known_hosts" \
push "git@github.com:$GITHUB_REPOSITORY.git" "$GITHUB_SHA:refs/tags/$TAG"
env:
GH_TOKEN: ${{ github.token }}
RELEASE_TAG_KEY: ${{ secrets.RELEASE_TAG_KEY }}

# No token: npm trusts this workflow through OIDC. --no-git-checks: the verify job already
# checked this commit.
Expand Down
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