Build the CI tool from tagged module settings

examples/woodpecker/tag-delivery.yml

@@ -1,7 +1,6 @@
 matrix:
   include:
     - GO_IMAGE: golang:1.25.0-bookworm
-      RELEASEKIT_VERSION: v0.1.0
 
 when:
   - event: tag
@@ -15,7 +14,36 @@ steps:
         from_secret: releasekit_gitea_token
     commands:
       - |
-        go run gitea.maximumdirect.net/eric/ReleaseKit/cmd/releasekit@${RELEASEKIT_VERSION} ci-deliver \
+        set -eu
+        test -n "$${CI_COMMIT_TAG}"
+        test -n "$${CI_COMMIT_SHA}"
+        git check-ref-format "refs/tags/$${CI_COMMIT_TAG}"
+        git fetch origin "refs/tags/$${CI_COMMIT_TAG}:refs/tags/$${CI_COMMIT_TAG}"
+        tag_commit=$(git rev-parse "refs/tags/$${CI_COMMIT_TAG}^{commit}")
+        expected_commit=$(printf '%s' "$${CI_COMMIT_SHA}" | tr '[:upper:]' '[:lower:]')
+        test "$(printf '%s' "$${tag_commit}" | tr '[:upper:]' '[:lower:]')" = "$${expected_commit}"
+        git checkout --detach "$${tag_commit}"
+        test "$(git rev-parse HEAD | tr '[:upper:]' '[:lower:]')" = "$${expected_commit}"
+        test -z "$(git status --porcelain --untracked-files=all)"
+
+        bootstrap_dir=$(mktemp -d "$${CI_WORKSPACE%/*}/.releasekit-bootstrap.XXXXXX")
+        trap 'rm -rf "$${bootstrap_dir}"' EXIT
+        cp go.mod "$${bootstrap_dir}/go.mod"
+        if [ -f go.sum ]; then
+          cp go.sum "$${bootstrap_dir}/go.sum"
+        else
+          : > "$${bootstrap_dir}/go.sum"
+        fi
+        cp "$${bootstrap_dir}/go.mod" "$${bootstrap_dir}/releasekit.mod"
+        cp "$${bootstrap_dir}/go.sum" "$${bootstrap_dir}/releasekit.sum"
+
+        export GOWORK=off
+        export GOTOOLCHAIN=local
+        releasekit_module=gitea.maximumdirect.net/eric/ReleaseKit
+        go list -mod=mod -modfile="$${bootstrap_dir}/releasekit.mod" -m "$${releasekit_module}"
+        go build -mod=mod -modfile="$${bootstrap_dir}/releasekit.mod" \
+          -o "$${bootstrap_dir}/releasekit" "$${releasekit_module}/cmd/releasekit"
+        "$${bootstrap_dir}/releasekit" ci-deliver \
           --repo "$${CI_WORKSPACE}" \
           --commit "$${CI_COMMIT_SHA}" \
           "$${CI_COMMIT_TAG}"