1 files changed, 23 insertions, 0 deletions
diff --git a/src/go/collectors/go.d.plugin/pkg/dockerhost/dockerhost.go b/src/go/collectors/go.d.plugin/pkg/dockerhost/dockerhost.go
new file mode 100644
index 000000000..eb26b18fa
--- /dev/null
+++ b/src/go/collectors/go.d.plugin/pkg/dockerhost/dockerhost.go
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package dockerhost
+
+import (
+	"fmt"
+	"os"
+	"strings"
+)
+
+func FromEnv() string {
+	addr := os.Getenv("DOCKER_HOST")
+	if addr == "" {
+		return ""
+	}
+	if strings.HasPrefix(addr, "tcp://") || strings.HasPrefix(addr, "unix://") {
+		return addr
+	}
+	if strings.HasPrefix(addr, "/") {
+		return fmt.Sprintf("unix://%s", addr)
+	}
+	return fmt.Sprintf("tcp://%s", addr)
+}