linter: enable interfacer

Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>

.golangci.yml

@@ -67,7 +67,6 @@ linters:
     - nilerr
     - wastedassign
     - nilnil
-    - interfacer
 linters-settings:
   errcheck:
     check-blank: false

pkg/domain/infra/abi/terminal/terminal_linux.go

@@ -39,7 +39,7 @@ func ExecAttachCtr(ctx context.Context, ctr *libpod.Container, execConfig *libpo
 // StartAttachCtr starts and (if required) attaches to a container
 // if you change the signature of this function from os.File to io.Writer, it will trigger a downstream
 // error. we may need to just lint disable this one.
-func StartAttachCtr(ctx context.Context, ctr *libpod.Container, stdout, stderr, stdin *os.File, detachKeys string, sigProxy bool, startContainer bool) error { //nolint-interfacer
+func StartAttachCtr(ctx context.Context, ctr *libpod.Container, stdout, stderr, stdin *os.File, detachKeys string, sigProxy bool, startContainer bool) error { //nolint: interfacer
 	resize := make(chan define.TerminalSize)
 
 	haveTerminal := terminal.IsTerminal(int(os.Stdin.Fd()))