adds a label for initContainers, test and user-guide (#1840)

* adds a label for initContainers, test and user-guide

Signed-off-by: jose luis <2064537+sosan@users.noreply.github.com>

* solved suggestion version from 2 to 3, coments

Signed-off-by: jose luis <2064537+sosan@users.noreply.github.com>

* test e2e

Signed-off-by: jose luis <2064537+sosan@users.noreply.github.com>

* add target to kompose build

Signed-off-by: jose luis <2064537+sosan@users.noreply.github.com>

* chore(deps)(deps): bump golang.org/x/tools from 0.16.1 to 0.19.0 (#1836)

Bumps [golang.org/x/tools](https://github.com/golang/tools) from 0.16.1 to 0.19.0.
- [Release notes](https://github.com/golang/tools/releases)
- [Commits](https://github.com/golang/tools/compare/v0.16.1...v0.19.0)

---
updated-dependencies:
- dependency-name: golang.org/x/tools
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* changed var names contaers to containers
changed labels to kompose.init.container.name, kompose.init.container.image, kompose.init.container.command
fixed documentation, tests and e2e
also merged main with new commits to this branch

Signed-off-by: jose luis <2064537+sosan@users.noreply.github.com>

---------

Signed-off-by: jose luis <2064537+sosan@users.noreply.github.com>
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Kubernetes Prow Robot <20407524+k8s-ci-robot@users.noreply.github.com>

script/test/cmd/tests_new.sh

@@ -339,3 +339,8 @@ os_cmd="kompose -f $KOMPOSE_ROOT/script/test/fixtures/resources-lowercase/compos
 os_output="$KOMPOSE_ROOT/script/test/fixtures/resources-lowercase/output-os.yaml"
 convert::expect_success "$k8s_cmd" "$k8s_output" || exit 1
 convert::expect_success "$os_cmd" "$os_output" || exit 1
+
+# Test resources to generate initcontainer
+k8s_cmd="kompose -f $KOMPOSE_ROOT/script/test/fixtures/initcontainer/compose.yaml convert --stdout --with-kompose-annotation=false"
+k8s_output="$KOMPOSE_ROOT/script/test/fixtures/initcontainer/output-k8s.yaml"
+convert::expect_success_and_warning "$k8s_cmd" "$k8s_output" || exit 1

script/test/fixtures/initcontainer/compose.yaml

@@ -0,0 +1,8 @@
+version: "3"
+services:
+  web:
+    image: nginx
+    labels:
+      kompose.init.containers.name: "init-myservice"
+      kompose.init.containers.image: "busybox:1.28"
+      kompose.init.containers.command: '["sh", "-c", "until nslookup myservice.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for myservice; sleep 2; done"]'

script/test/fixtures/initcontainer/output-k8s.yaml

@@ -0,0 +1,29 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    io.kompose.service: web
+  name: web
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      io.kompose.service: web
+  template:
+    metadata:
+      labels:
+        io.kompose.network/initcontainer-default: "true"
+        io.kompose.service: web
+    spec:
+      containers:
+        - image: nginx
+          name: web
+      initContainers:
+        - command:
+            - sh
+            - -c
+            - until nslookup myservice.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for myservice; sleep 2; done
+          image: busybox:1.28
+          name: init-myservice
+      restartPolicy: Always