Update .goreleaser following the current docs

Author: nagyv

.goreleaser.yml

@@ -1,5 +1,14 @@
+# Visit https://goreleaser.com for documentation on how to customize this
+# behavior.
+before:
+  hooks:
+    # this is just an example and not a requirement for provider building/publishing
+    - go mod tidy
 builds:
 - env:
+    # goreleaser does not work with CGO, it could also complicate
+    # usage by users in CI/CD systems like Terraform Cloud where
+    # they are unable to install libraries.
     - CGO_ENABLED=0
   mod_timestamp: '{{ .CommitTimestamp }}'
   flags:
@@ -24,17 +33,28 @@ archives:
 - format: zip
   name_template: '{{ .ProjectName }}_{{ .Version }}_{{ .Os }}_{{ .Arch }}'
 checksum:
+  extra_files:
+    - glob: 'terraform-registry-manifest.json'
+      name_template: '{{ .ProjectName }}_{{ .Version }}_manifest.json'
   name_template: '{{ .ProjectName }}_{{ .Version }}_SHA256SUMS'
   algorithm: sha256
 signs:
   - artifacts: checksum
     args:
+      # if you are using this in a GitHub action or some other automated pipeline, you 
+      # need to pass the batch flag to indicate its not interactive.
       - "--batch"
       - "--local-user"
-      - "{{ .Env.GPG_FINGERPRINT }}"
+      - "{{ .Env.GPG_FINGERPRINT }}" # set this environment variable for your signing key
       - "--output"
       - "${signature}"
       - "--detach-sign"
       - "${artifact}"
+release:
+  extra_files:
+    - glob: 'terraform-registry-manifest.json'
+      name_template: '{{ .ProjectName }}_{{ .Version }}_manifest.json'
+  # If you want to manually examine the release before its live, uncomment this line:
+  # draft: true
 changelog:
   skip: true