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ci: use a GitHub App token to rebuild dist on dependabot PRs (#569)

* ci: use a GitHub App token to rebuild dist on dependabot PRs

Replaces GH_PAT (a broad org PAT) with a GitHub App token for pushing the
rebuilt dist/ back to Dependabot PR branches. An App token is scoped to
this repo with minimal permissions and is short-lived, so it is much safer
to expose on the (semi-trusted) Dependabot PR build than a wide PAT.

The job stays a no-op until the DIST_REBUILD_APP_ID and
DIST_REBUILD_APP_PRIVATE_KEY Dependabot secrets are configured.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>

* ci: use GORELEASER_APP_ID/GORELEASER_APP_KEY for dist rebuild

Use the existing GoReleaser GitHub App secrets instead of dedicated
DIST_REBUILD_* ones.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>

---------

Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Carlos Alexandro Becker 2026-06-27 10:26:46 -03:00 committed by GitHub
parent d2d17a6c5d
commit a4f614e65e
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@ -17,45 +17,55 @@ jobs:
# the validate workflow stays green.
#
# Dependabot runs get a read-only GITHUB_TOKEN, and commits pushed with it do
# not re-trigger checks. Pushing the dist commit therefore uses GH_PAT, which
# can re-run workflows. Note: Dependabot runs only expose Dependabot secrets,
# so GH_PAT must exist as a Dependabot secret (org or repo) with contents:write
# on this repo. Until it does this job is a no-op.
# not re-trigger checks. Pushing the dist commit therefore uses a GitHub App
# token, which is repo-scoped and short-lived, and can re-run workflows.
# Configure a GitHub App with contents:write on this repo and set its
# credentials as Dependabot secrets named GORELEASER_APP_ID and
# GORELEASER_APP_KEY (Dependabot runs only expose Dependabot secrets).
# Until both exist this job is a no-op.
rebuild-dist:
if: github.actor == 'dependabot[bot]'
runs-on: ubuntu-latest
steps:
- name: Check token
id: token
- name: Check app credentials
id: app
env:
GH_PAT: ${{ secrets.GH_PAT }}
GORELEASER_APP_ID: ${{ secrets.GORELEASER_APP_ID }}
GORELEASER_APP_KEY: ${{ secrets.GORELEASER_APP_KEY }}
run: |
if [ -n "$GH_PAT" ]; then
if [ -n "$GORELEASER_APP_ID" ] && [ -n "$GORELEASER_APP_KEY" ]; then
echo "available=true" >> "$GITHUB_OUTPUT"
else
echo "available=false" >> "$GITHUB_OUTPUT"
echo "::notice::GH_PAT Dependabot secret is not set; skipping automatic dist rebuild."
echo "::notice::GORELEASER_APP_ID/GORELEASER_APP_KEY Dependabot secrets are not set; skipping automatic dist rebuild."
fi
- name: Generate token
if: steps.app.outputs.available == 'true'
id: token
uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
with:
app-id: ${{ secrets.GORELEASER_APP_ID }}
private-key: ${{ secrets.GORELEASER_APP_KEY }}
- name: Checkout
if: steps.token.outputs.available == 'true'
if: steps.app.outputs.available == 'true'
uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
with:
ref: ${{ github.head_ref }}
token: ${{ secrets.GH_PAT }}
token: ${{ steps.token.outputs.token }}
- name: Setup Node.js
if: steps.token.outputs.available == 'true'
if: steps.app.outputs.available == 'true'
uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
with:
node-version-file: '.node-version'
cache: npm
- name: Install dependencies
if: steps.token.outputs.available == 'true'
if: steps.app.outputs.available == 'true'
run: npm ci --ignore-scripts
- name: Rebuild dist
if: steps.token.outputs.available == 'true'
if: steps.app.outputs.available == 'true'
run: npm run build
- name: Commit and push dist if changed
if: steps.token.outputs.available == 'true'
if: steps.app.outputs.available == 'true'
env:
HEAD_REF: ${{ github.head_ref }}
run: |