bump containers/image to v5.0.0, buildah to v1.11.4

Move to containers/image v5 and containers/buildah to v1.11.4.

Replace an equality check with a type assertion when checking for a
docker.ErrUnauthorizedForCredentials in `podman login`.

Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>

vendor/github.com/fsouza/go-dockerclient/Makefile

@@ -1,34 +1,27 @@
 .PHONY: \
 	all \
-	staticcheck \
+	lint \
 	fmt \
-	fmtcheck \
 	pretest \
 	test \
 	integration
 
 all: test
 
-staticcheck:
-	GO111MODULE=off go get honnef.co/go/tools/cmd/staticcheck
-	staticcheck ./...
-
-fmtcheck:
-	if [ -z "$${SKIP_FMT_CHECK}" ]; then [ -z "$$(gofumpt -s -d . | tee /dev/stderr)" ]; fi
+lint:
+	cd /tmp && GO111MODULE=on go get github.com/golangci/golangci-lint/cmd/golangci-lint@latest
+	golangci-lint run
 
 fmt:
 	GO111MODULE=off go get mvdan.cc/gofumpt
 	gofumpt -s -w .
 
-testdeps:
-	go mod download
-
-pretest: staticcheck fmtcheck
+pretest: lint
 
 gotest:
 	go test -race -vet all ./...
 
-test: testdeps pretest gotest
+test: pretest gotest
 
 integration:
 	go test -tags docker_integration -run TestIntegration -v