Add stdin version of kubectl docker command

ci_geosphere/gitlab-ci.yaml

@@ -60,7 +60,7 @@ gs deploy rabbit:
     - cp ${kubekorner_k3s_config} .
     - kubeconfig=$(basename ${kubekorner_k3s_config})
     - |-
-      kubectl get secret --kubeconfig "${kubeconfig}" geosphere-rabbit-rabbitmq --namespace=geosphere -oyaml | grep -v '^\s*namespace:\s' | grep -v "[Hh]elm" | grep -v "[tT]ime" | grep -v "selfLink" | grep -v "uid" | grep -v "resourceVersion" | sed 's/ name: .*/ name: geosphere-rabbit-rabbitmq-production/' | kubectl_noattach apply --kubeconfig "${kubeconfig}" --namespace=geosphere-test -f -
+      kubectl get secret --kubeconfig "${kubeconfig}" geosphere-rabbit-rabbitmq --namespace=geosphere -oyaml | grep -v '^\s*namespace:\s' | grep -v "[Hh]elm" | grep -v "[tT]ime" | grep -v "selfLink" | grep -v "uid" | grep -v "resourceVersion" | sed 's/ name: .*/ name: geosphere-rabbit-rabbitmq-production/' | kubectl_stdin apply --kubeconfig "${kubeconfig}" --namespace=geosphere-test -f -
   # this job doesn't actually need any artifacts from previous jobs
   dependencies: []
   rules:

helpers/shell_aliases.sh

@@ -16,3 +16,8 @@ kubectl_noattach() {
     docker run --rm -v $(pwd):/apps -w /apps alpine/k8s:1.18.2 kubectl "$@"
 }
 export -f kubectl_noattach
+
+kubectl_stdin() {
+    docker run -a stdin --rm -v $(pwd):/apps -w /apps alpine/k8s:1.18.2 kubectl "$@"
+}
+export -f kubectl_stdin