Use ghcr.io/flatcar/nebraska as new location for container images

Makefile

@@ -4,7 +4,7 @@ export GO111MODULE
 TAG := `git describe --tags --always --exclude 'nebraska-helm*'`
 SHELL = /bin/bash
 DOCKER_CMD ?= "docker"
-DOCKER_REPO ?= "ghcr.io/kinvolk"
+DOCKER_REPO ?= "ghcr.io/flatcar"
 DOCKER_IMAGE_NEBRASKA ?= "nebraska"
 ifndef $(GOPATH)
 	GOPATH=$(shell go env GOPATH)

README.md

@@ -20,6 +20,10 @@ the [Omaha](https://code.google.com/p/omaha/) protocol, with special functionali
 - Statistics about the versions installed for instances, status history, and updates progress, etc.;
 - Activity timeline to quickly see important events or errors;
 
+## Published Container Images
+
+**UPDATE:** New container images are now only published under `ghcr.io/flatcar/nebraska`.
+
 ## Screenshots
 
 <table>

backend/Makefile

@@ -4,7 +4,7 @@ export GO111MODULE
 TAG := `git describe --tags --always --exclude 'nebraska-helm*'`
 SHELL = /bin/bash
 DOCKER_CMD ?= "docker"
-DOCKER_REPO ?= "ghcr.io/kinvolk"
+DOCKER_REPO ?= "ghcr.io/flatcar"
 DOCKER_IMAGE_NEBRASKA ?= "nebraska"
 VERSION ?=
 CONTAINER_NEBRASKA_DB_URL ?= "postgres://postgres:[email protected]:8001/nebraska_tests?sslmode=disable&connect_timeout=10"