fix: align runner behaviours (#1338)

Contains a number of small bug fixes where jobs behaved differently from GitHub or failed silently.

1. Hooks fail on a refused `::set-env::` or `::add-path::` and no longer inherit the last step's identity
1. Docker build, exec and wait errors are returned instead of swallowed, token-only registry credentials work, logs of `--tty` services decode
1. Env files split lines like GitHub on each OS, so a carriage return is kept on Linux and CRLF ends a line on Windows, empty heredoc names or delimiters are rejected
1. Post steps run after their pre step even when main was skipped, composites see undeclared inputs, `runs.args` wins without `with.args` being parsed
1. Docker actions skip evaluating defaults of inputs given in `with` and read `entryPoint` and `args` in any case, a lowercase `dockerfile` is found, undeclared inputs get GitHub's warning
1. A user-set `CI` is kept, `GITHUB_REPOSITORY_ID` and the other missing `GITHUB_*` variables are exported
1. `timeout-minutes` can read the step's own `env`, a step-level `ACTIONS_ALLOW_UNSECURE_COMMANDS: false` beats a job-level `true` while the runner's own opt-in still wins, `pwsh` quotes the script path
1. A step `env:` given as one expression such as `${{ fromJSON(matrix.env) }}` is applied, `hashFiles` fails with GitHub's messages on script errors and after 120 seconds, a job image without node still gets an empty hash
1. A step whose command files cannot be reset fails instead of importing stale ones, a timeout between steps fails the job instead of reporting success
1. One named volume can be mounted at several paths, host-mode PTY steps keep their last output when they fail, host scratch directories are removed when job setup fails
1. Cancelling a step right after it starts kills its whole process tree
1. Cache prefix restores pick the newest entry created within the same second, also on S3, cache commits with a wrong size are rejected
1. Artifact chunks are written at their offset, download URLs are escaped, listing a run without artifacts no longer crashes
1. Poll backoff reaches `fetch_interval_max`, proxy passwords are masked in more forms, secrets are also masked in step names and in their quoted form in the runner log, a failed final report is logged
1. On Windows hosts a differently cased unsecure-commands opt-in or proxy variable counts, and an early cancel no longer leaks a job object handle
1. Interactive `register` prompts for a missing token and stops on SIGTERM, `exec --list --detect-event` no longer panics without events, `config set` works on `cache.s3` keys

Reviewed-on: https://gitea.com/gitea/runner/pulls/1338
Reviewed-by: bircni <[email protected]>
Co-authored-by: silverwind <[email protected]>

act/ghcontext/github_context.go

@@ -57,12 +57,29 @@ func SetRef(ctx context.Context, ghc *model.GithubContext, repoPath string) {
 	case "pull_request_target":
 		ghc.Ref = "refs/heads/" + ghc.BaseRef
 	case "pull_request", "pull_request_review", "pull_request_review_comment":
-		ghc.Ref = fmt.Sprintf("refs/pull/%.0f/merge", ghc.Event["number"])
+		number := ghc.Event["number"]
+		if number == nil {
+			number = model.NestedMapLookup(ghc.Event, "pull_request", "number")
+		}
+		ghc.Ref = fmt.Sprintf("refs/pull/%.0f/merge", number)
+		if ghc.EventName == "pull_request" && ghc.Event["action"] == "closed" && model.NestedMapLookup(ghc.Event, "pull_request", "merged") == true {
+			ghc.Ref = "refs/heads/" + ghc.BaseRef
+		}
 	case "deployment", "deployment_status":
 		ghc.Ref = model.AsString(model.NestedMapLookup(ghc.Event, "deployment", "ref"))
 	case "release":
 		ghc.Ref = "refs/tags/" + model.AsString(model.NestedMapLookup(ghc.Event, "release", "tag_name"))
-	case "push", "create", "workflow_dispatch":
+	case "create":
+		ghc.Ref = model.AsString(ghc.Event["ref"])
+		if ghc.Ref != "" && !strings.HasPrefix(ghc.Ref, "refs/") {
+			switch model.AsString(ghc.Event["ref_type"]) {
+			case "branch":
+				ghc.Ref = "refs/heads/" + ghc.Ref
+			case "tag":
+				ghc.Ref = "refs/tags/" + ghc.Ref
+			}
+		}
+	case "push", "workflow_dispatch":
 		ghc.Ref = model.AsString(ghc.Event["ref"])
 	default:
 		defaultBranch := model.AsString(model.NestedMapLookup(ghc.Event, "repository", "default_branch"))