fix: Multiple fixes (#33)

* fix: Add timestamp
* fix: Add missing var name for CARVEL_PACKAGE_SA
* fix: Add missing metadata

Author: MAHDTech

Diff for: content/tutorials/carvel/packages/author/easy/kctrl.md

@@ -130,7 +130,7 @@ cat <<- EOF > "${CARVEL_PACKAGE_HOME}/packages/${CARVEL_PACKAGE_NAME}.${CARVEL_P
 apiVersion: kctrl.carvel.dev/v1alpha1
 kind: PackageBuild
 metadata:
-  creationTimestamp: null
+  creationTimestamp: "$(date -u +"%Y-%m-%dT%H:%M:%SZ")"
   name: ${CARVEL_PACKAGE_NAME}.${CARVEL_PACKAGE_FQDN}
 spec:
   release:
@@ -170,12 +170,14 @@ cat <<- EOF > "${CARVEL_PACKAGE_HOME}/packages/${CARVEL_PACKAGE_NAME}.${CARVEL_P
 apiVersion: data.packaging.carvel.dev/v1alpha1
 kind: PackageMetadata
 metadata:
-  creationTimestamp: null
+  creationTimestamp: "$(date -u +"%Y-%m-%dT%H:%M:%SZ")"
   name: ${CARVEL_PACKAGE_NAME}.${CARVEL_PACKAGE_FQDN}
 spec:
   displayName: ${CARVEL_PACKAGE_NAME}
   longDescription: ${CARVEL_PACKAGE_NAME}.${CARVEL_PACKAGE_FQDN}
   shortDescription: ${CARVEL_PACKAGE_NAME}.${CARVEL_PACKAGE_FQDN}
+  maintainers: []
+  categories: []
 EOF
 
 # Package Readme
@@ -593,9 +595,7 @@ stringData:
   values.yaml: |
     ---
 
-    # Place value overrides here.
-
-    registry: harbor.internal.lan
+    # Place value overrides for your specific package here.
 
 EOF
 ```

Diff for: content/tutorials/carvel/packages/author/hard/repository.md

@@ -237,7 +237,7 @@ metadata:
   name: ${PACKAGE_NAME}
   namespace: ${PACKAGE_NAMESPACE}
 spec:
-  serviceAccountName: ${PACKAGE_NAMESPACE}-sa
+  serviceAccountName: ${PACKAGE_SA}
   packageRef:
     refName: ${PACKAGE_NAME}.${PACKAGE_FQN}
     versionSelection:

Diff for: content/tutorials/carvel/packages/author/hard/variables.md

@@ -61,6 +61,9 @@ PACKAGE_AUTHOR_EMAIL="[email protected]"
 # Package Author website
 PACKAGE_WEBSITE="https://saltlabs.tech"
 
+# What is the service account that is used to install packages
+PACKAGE_SA="kapp-controller-sa"
+
 # What is the version of the repository you will be creating?
 REPOSITORY_VERSION="$(date +%Y-%m-%d)"