diff --git a/README.md b/README.md
index b375af2..c5b1052 100644
--- a/README.md
+++ b/README.md
@@ -97,6 +97,12 @@ Following the capabilities of this action:
     <td></td>
   </tr>
 
+  <tr>
+    <td><code>platform</code><br/></td>
+    <td>(Optional) Build platform, windows or linux with optional arch variant (/arm/v7). Default to linux </td>
+    <td></td>
+  </tr>
+
 </table>
 
 ## Example usage
diff --git a/action.yml b/action.yml
index ad9d692..6998de0 100644
--- a/action.yml
+++ b/action.yml
@@ -32,6 +32,9 @@ inputs:
   branch:
     description: "Branch to build from, defaults to master"
     required: false
+  platform:
+    description: "Build platform, windows or linux with optional arch variant (/arm/v7). Default to linux"
+    required: false
   folder:
     description: "The folder in the Github repo that holds the source"
     required: true
diff --git a/entrypoint.sh b/entrypoint.sh
index c667c63..2f1d55e 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -4,7 +4,9 @@ set -e
 INPUT_DOCKERFILE=${INPUT_DOCKERFILE:-Dockerfile}
 INPUT_TAG=${INPUT_TAG:-${GITHUB_SHA::8}}
 INPUT_BRANCH=${INPUT_BRANCH:-master}
+INPUT_PLATFORM=${INPUT_PLATFORM:-linux}  
 IMAGE_PART=""
+
 if [ -n "$INPUT_BUILD_ARGS" ]; then
         BUILD_ARGS=`echo -n ${INPUT_BUILD_ARGS:-''} |jq -j '.[] | keys[] as $k | values[] as $v |  "--build-arg \($k)=\"\($v)\" "'`
 fi
@@ -23,4 +25,4 @@ echo "Logging into azure.."
 az login --service-principal -u ${INPUT_SERVICE_PRINCIPAL} -p ${INPUT_SERVICE_PRINCIPAL_PASSWORD} --tenant ${INPUT_TENANT}
 
 echo "Sending build job to ACR.."
-az acr build -r ${INPUT_REGISTRY} ${BUILD_ARGS} -f ${INPUT_DOCKERFILE} -t ${INPUT_REPOSITORY}${IMAGE_PART}:${INPUT_TAG} https://${GIT_ACCESS_TOKEN_FLAG}github.com/${GITHUB_REPOSITORY}.git#${INPUT_BRANCH}:${INPUT_FOLDER}
+az acr build --platform ${INPUT_PLATFORM} -r ${INPUT_REGISTRY} ${BUILD_ARGS} -f ${INPUT_DOCKERFILE} -t ${INPUT_REPOSITORY}${IMAGE_PART}:${INPUT_TAG} https://${GIT_ACCESS_TOKEN_FLAG}github.com/${GITHUB_REPOSITORY}.git#${INPUT_BRANCH}:${INPUT_FOLDER}