CaptureConfig: Update config if it already exists.

Change-Id: I0ecd09a65f0d74806d0329772e04ffa57e9a40ee
diff --git a/apps/capture-config/Makefile b/apps/capture-config/Makefile
index a5e3014..1a65580 100644
--- a/apps/capture-config/Makefile
+++ b/apps/capture-config/Makefile
@@ -1,3 +1,9 @@
+repo_name ?= giolekva
+podman ?= docker
+ifeq ($(podman), podman)
+manifest_dest=docker://docker.io/$(repo_name)/capture-config:latest
+endif
+
 clean:
 	rm -f capture-config_*
 
@@ -16,14 +22,14 @@
 	go build -o capture-config_amd64 *.go
 
 push_arm64: clean build_arm64
-	podman build --platform linux/arm64 --tag=giolekva/capture-config:arm64 .
-	podman push giolekva/capture-config:arm64
+	$(podman) build --platform linux/arm64 --tag=$(repo_name)/capture-config:arm64 .
+	$(podman) push $(repo_name)/capture-config:arm64
 
 push_amd64: clean build_amd64
-	podman build --platform linux/amd64 --tag=giolekva/capture-config:amd64 .
-	podman push giolekva/capture-config:amd64
+	$(podman) build --platform linux/amd64 --tag=$(repo_name)/capture-config:amd64 .
+	$(podman) push $(repo_name)/capture-config:amd64
 
 push: push_arm64 push_amd64
-	podman manifest create giolekva/capture-config:latest giolekva/capture-config:arm64 giolekva/capture-config:amd64
-	podman manifest push giolekva/capture-config:latest docker://docker.io/giolekva/capture-config:latest
-	podman manifest rm giolekva/capture-config:latest
+	$(podman) manifest create $(repo_name)/capture-config:latest $(repo_name)/capture-config:arm64 $(repo_name)/capture-config:amd64
+	$(podman) manifest push $(repo_name)/capture-config:latest $(manifest_dest)
+	$(podman) manifest rm $(repo_name)/capture-config:latest