From be5349c05a4f7fa63157a22ab741d378cc7e7009 Mon Sep 17 00:00:00 2001
From: Michael Frister <michael.frister@friday.de>
Date: Tue, 12 Nov 2019 11:40:37 +0100
Subject: [PATCH 1/2] Docker image: Add source code reference label

This allows tools that automate component updates (in our case Renovate Bot [1])
to automatically find the source repository for the Docker image and extract
release notes from there. Renovate Bot can include the relevant release notes
automatically in a merge request changing the component version.

In [2], Renovate added the label for their own Docker image.

[1] https://github.com/renovatebot/renovate
[2] https://github.com/renovatebot/renovate/pull/3753
---
 rootfs/Dockerfile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/rootfs/Dockerfile b/rootfs/Dockerfile
index 5b00513a6..bd9498edf 100644
--- a/rootfs/Dockerfile
+++ b/rootfs/Dockerfile
@@ -14,6 +14,8 @@
 
 FROM BASEIMAGE
 
+LABEL org.opencontainers.image.source="https://github.com/kubernetes/ingress-nginx"
+
 CROSS_BUILD_COPY qemu-QEMUARCH-static /usr/bin/
 
 WORKDIR  /etc/nginx

From dea9c405e5fc7f8ce859ead798c451e69059d8e4 Mon Sep 17 00:00:00 2001
From: Michael Frister <michael.frister@friday.de>
Date: Mon, 18 Nov 2019 10:20:20 +0100
Subject: [PATCH 2/2] Docker image: Add more opencontainers labels (incl.
 version)

---
 Makefile          | 1 +
 rootfs/Dockerfile | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/Makefile b/Makefile
index f8f3c5e57..31dc3a901 100644
--- a/Makefile
+++ b/Makefile
@@ -117,6 +117,7 @@ container: clean-container .container-$(ARCH)
 	cp -RP ./* $(TEMP_DIR)
 	$(SED_I) "s|BASEIMAGE|$(BASEIMAGE)|g" $(DOCKERFILE)
 	$(SED_I) "s|QEMUARCH|$(QEMUARCH)|g" $(DOCKERFILE)
+	$(SED_I) "s|VERSION|$(TAG)|g" $(DOCKERFILE)
 
 ifeq ($(ARCH),amd64)
 	# When building "normally" for amd64, remove the whole line, it has no part in the amd64 image
diff --git a/rootfs/Dockerfile b/rootfs/Dockerfile
index bd9498edf..d93701db7 100644
--- a/rootfs/Dockerfile
+++ b/rootfs/Dockerfile
@@ -14,7 +14,12 @@
 
 FROM BASEIMAGE
 
+LABEL org.opencontainers.image.title='NGINX Ingress Controller for Kubernetes'
+LABEL org.opencontainers.image.documentation='https://kubernetes.github.io/ingress-nginx/'
 LABEL org.opencontainers.image.source="https://github.com/kubernetes/ingress-nginx"
+LABEL org.opencontainers.image.vendor='The Kubernetes Authors'
+LABEL org.opencontainers.image.licenses='Apache-2.0'
+LABEL org.opencontainers.image.version='VERSION'
 
 CROSS_BUILD_COPY qemu-QEMUARCH-static /usr/bin/