Add copy-only flag for blog previews

Author: mattrunyon

README.md

@@ -34,6 +34,11 @@ inputs:
     default: "true"
     type: boolean
     description: "If true, the files will be marked as temporary and deleted after 14 days. Otherwise they will persist in S3 indefinitely."
+  copy-only:
+    required: false
+    default: "false"
+    type: boolean
+    description: "If true, uses rclone copy instead of sync. The files will be copied to the destination without affecting the existing files that do not exist in the source."
 ```
 
 ## Example

action.yml

@@ -24,6 +24,11 @@ inputs:
     default: "true"
     type: boolean
     description: "If true, the files will be marked as temporary and deleted after 14 days. Otherwise they will persist in S3 indefinitely."
+  copy-only:
+    required: false
+    default: "false"
+    type: boolean
+    description: "If true, uses rclone copy instead of sync. The files will be copied to the destination without affecting the existing files that do not exist in the source."
 
 runs:
   using: "composite"
@@ -49,4 +54,4 @@ runs:
       # Check temporary != 'false' so any other value is marked as temporary since there's no actual validation of boolean or required inputs
       # The production bucket doesn't have a lifecycle rule, so omitting temporary just results in a tag on files. They won't actually be deleted
       run: |
-        rclone sync --fast-list --checksum ${{ inputs.source }} :s3:${{ inputs.production == 'true' && 'deephaven-docs' || 'deephaven-docs-preview' }}/${{ inputs.destination }} ${{ inputs.temporary != 'false' && '--header-upload "x-amz-tagging: temporary=true"' || '' }}
+        rclone ${{ inputs.copy-only == 'true' && 'copy' || 'sync' }} --fast-list --checksum ${{ inputs.source }} :s3:${{ inputs.production == 'true' && 'deephaven-docs' || 'deephaven-docs-preview' }}/${{ inputs.destination }} ${{ inputs.temporary != 'false' && '--header-upload "x-amz-tagging: temporary=true"' || '' }}