From 3c659b532269440e70b8cc6e8bc44d623cab8313 Mon Sep 17 00:00:00 2001
From: Philip Laine <philip.laine@gmail.com>
Date: Sat, 27 Jul 2024 13:18:51 +0200
Subject: [PATCH] Set blob content type to disable detection

---
 CHANGELOG.md             | 1 +
 pkg/registry/registry.go | 1 +
 2 files changed, 2 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0da9de50..5d1e2258 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [#519](https://github.com/spegel-org/spegel/pull/519) Extend tests for containerd.
 - [#520](https://github.com/spegel-org/spegel/pull/520) Add tests for metrics.
 - [#536](https://github.com/spegel-org/spegel/pull/536) Update Go version to 1.22.5.
+- [#547](https://github.com/spegel-org/spegel/pull/547) Set blob content type to disable detection.
 
 ### Deprecated
 
diff --git a/pkg/registry/registry.go b/pkg/registry/registry.go
index df952cdb..faea712b 100644
--- a/pkg/registry/registry.go
+++ b/pkg/registry/registry.go
@@ -334,6 +334,7 @@ func (r *Registry) handleBlob(rw mux.ResponseWriter, req *http.Request, ref refe
 		rw.WriteError(http.StatusInternalServerError, fmt.Errorf("could not determine size of blob with digest %s: %w", ref.dgst.String(), err))
 		return
 	}
+	rw.Header().Set("Content-Type", "application/octet-stream")
 	rw.Header().Set("Content-Length", strconv.FormatInt(size, 10))
 	rw.Header().Set("Docker-Content-Digest", ref.dgst.String())
 	if req.Method == http.MethodHead {