gitlab-runner_1_11: add patch to fetch shells from system path

pkgs/development/tools/continuous-integration/gitlab-runner/v1-fix-shell-path.patch

@@ -0,0 +1,13 @@
+diff --git a/shells/bash.go b/shells/bash.go
+index c9c8b68..c97dbb5 100644
+--- a/shells/bash.go
++++ b/shells/bash.go
+@@ -208,7 +208,7 @@ func (b *BashShell) GetConfiguration(info common.ShellScriptInfo) (script *commo
+ 	if info.User != "" {
+ 		script.Command = "su"
+ 		if runtime.GOOS == "linux" {
+-			script.Arguments = append(script.Arguments, "-s", "/bin/"+b.Shell)
++			script.Arguments = append(script.Arguments, "-s", "/run/current-system/sw/bin/"+b.Shell)
+ 		}
+ 		script.Arguments = append(script.Arguments, info.User)
+ 		script.Arguments = append(script.Arguments, "-c", shellCommand)

pkgs/development/tools/continuous-integration/gitlab-runner/v1.nix

@@ -32,6 +32,8 @@ buildGoPackage rec {
     sha256 = "1sjvlb5981ykc8hr4kp1ibh9jw2wdjjp9zs2nqs9lpsav4nda5fr";
   };
 
+  patches = [ ./v1-fix-shell-path.patch ];
+
   buildInputs = [ go-bindata ];
 
   preBuild = ''