Add secrets and secret-files parameters (#33)

Author: Benbentwo

action.yml

@@ -59,6 +59,12 @@ inputs:
   tags:
     description: "List of tags (supports https://github.com/docker/metadata-action#tags-input)"
     required: false
+  secrets:
+    description: "List of secrets to expose to the build (e.g., key=string, GIT_AUTH_TOKEN=mytoken)"
+    required: false
+  secret-files:
+    description: "List of secret files to expose to the build (e.g., key=filename, MY_SECRET=./secret.txt)"
+    required: false
 outputs:
   image:
     description: "Docker image name"
@@ -152,6 +158,8 @@ runs:
         target: ${{ inputs.target }}
         labels: ${{ steps.meta.outputs.labels }}
         platforms: ${{ inputs.platforms }}
+        secrets: ${{ inputs.secrets }}
+        secret-files: ${{ inputs.secret-files }}
 
     - name: Get Metadata
       id: get-metadata