component/web: Implement nicer compose reader

pkg/compose/compose.go

@@ -0,0 +1,43 @@
+package compose
+
+import (
+	"path/filepath"
+
+	"github.com/compose-spec/compose-go/cli"
+	"github.com/compose-spec/compose-go/loader"
+	"github.com/compose-spec/compose-go/types"
+)
+
+// ComposeProject represents a compose project
+type Project = *types.Project
+
+// Open loads a docker compose project from the given path.
+// The returned name indicates the name, as would be found by the 'docker compose' executable.
+// If the project could not be found, an appropriate error is returned.
+//
+// NOTE: This intentionally omits using any kind of api for docker compose.
+// This saves a *a lot* of dependencies.
+func Open(path string) (project Project, err error) {
+	ppath, err := filepath.Abs(path)
+	if err != nil {
+		return nil, err
+	}
+
+	opts, err := cli.NewProjectOptions(
+		/* configs = */ nil,
+		cli.WithWorkingDirectory(ppath),
+		cli.WithDefaultConfigPath,
+		cli.WithName(loader.NormalizeProjectName(filepath.Base(ppath))),
+		cli.WithDotEnv,
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	proj, err := cli.ProjectFromOptions(opts)
+	if err != nil {
+		return nil, err
+	}
+
+	return proj, nil
+}