build: fix missing container defintion

.drone.jsonnet

@@ -106,6 +106,31 @@ local push_pipelines(versions, architectures) = [
             for arch in architectures
         ],
         steps:
+            [   
+                {
+                    name: "Push " + version.tag,
+                    image: "quay.io/buildah/stable",
+                    privileged: true,
+                    environment:
+                        {
+                            USERNAME: 
+                            {
+                                from_secret: "username"
+                            },
+                            PASSWORD:
+                            {
+                                from_secret: "password"
+                            }
+                        },
+                    volumes:
+                    [
+                        {
+                            name: "fedhq-ca-crt",
+                            path: "/etc/ssl/certs2/"
+
+                        }
+                    ],
+                    commands:
                     [
                         "scripts/setupEnvironment.sh",
                         "buildah manifest create redmine:"+version.tag,
@@ -128,7 +153,9 @@ local push_pipelines(versions, architectures) = [
                     [
                         "buildah manifest push --all redmine:"+version.tag + " docker://registry.hub.docker.com/byterazor/redmine:"+tag
                         for tag in [version.tag]+version.additional_tags
-            ],        
+                    ]
+                }
+            ]
         }
         for version in versions
 ];