Relax Procfile processes definition regex

It's okay from processes to include `-` + `_` characters.

.github/workflows/acceptance.yml

@@ -14,6 +14,7 @@ jobs:
   test:
     if: ${{ github.event_name == 'push' || github.event.label.name == 'run-acceptance-tests' || github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' }}
     name: Acceptance
+    container: heroku/heroku:20-build
     runs-on: ubuntu-latest
     env:
       SLUGCMPLR_ACC: "true"

.github/workflows/build.yml

@@ -29,5 +29,5 @@ jobs:
       - uses: actions/checkout@v3
       - uses: golangci/[email protected]
         with:
-          version: v1.50
+          version: v1.57
 

buildpack/buildpack.go

@@ -119,11 +119,12 @@ func (b *Buildpack) Compile(ctx context.Context, exports []*Buildpack, build *Bu
 func (b *Buildpack) Export(_ context.Context, build *Build) (string, bool, error) {
 	export := filepath.Join(build.BuildDir, BuildpacksDir, b.Directory, "export")
 
-	if _, err := os.Stat(export); err == nil {
-		return export, true, nil
-	} else if os.IsNotExist(err) {
-		return "", false, nil
-	} else {
+	if _, err := os.Stat(export); err != nil {
+		if os.IsNotExist(err) {
+			return "", false, nil
+		}
 		return "", false, err
 	}
+
+	return export, true, nil
 }

processfile/procfile.go

@@ -10,7 +10,7 @@ import (
 // Procfile contains the definition of a Procfile.
 type Procfile map[string]string
 
-var regex = regexp.MustCompile(`^(?P<process>[a-zA-Z0-9]+): (?P<command>.*)$`)
+var regex = regexp.MustCompile(`^(?P<process>[a-zA-Z0-9_-]+): (?P<command>.*)$`)
 
 // New creates a new Procfile in-memory.
 func New() Procfile {

processfile/procfile_test.go

@@ -86,19 +86,21 @@ func Test_Read(t *testing.T) {
 
 	valid := `web: bin/server
 worker: bundle exec sidekiq -c config/sidekiq.yml
-cron: bin/scheduler`
+cron: bin/scheduler
+my_process: echo "hello"`
 
 	procf, err := processfile.Read(strings.NewReader(valid))
 	if err != nil {
 		t.Fatalf("unexpected error when reading procfile: %v", err)
 	}
 
-	Contain(t, []string{"web", "worker", "cron"}, procf.Processes())
+	Contain(t, []string{"web", "worker", "cron", "my_process"}, procf.Processes())
 
 	expected := map[string]string{
-		"web":    "bin/server",
-		"worker": "bundle exec sidekiq -c config/sidekiq.yml",
-		"cron":   "bin/scheduler",
+		"web":        "bin/server",
+		"worker":     "bundle exec sidekiq -c config/sidekiq.yml",
+		"cron":       "bin/scheduler",
+		"my_process": `echo "hello"`,
 	}
 
 	for proc, cmd := range expected {