Changes pushd build script to make sure it uses linux/amd64.

Author: bantonj

pushd_build.sh

@@ -1,5 +1,5 @@
 #!/bin/bash -xe
 # This script is for building and pushing to pushd ECR docker repo.
 
-docker build -t $AWS_ACCOUNT_ID.dkr.ecr.us-east-1.amazonaws.com/pushd/imgproxy:$(git rev-parse HEAD)  -f docker/Dockerfile .
+docker buildx build --platform linux/amd64 -t $AWS_ACCOUNT_ID.dkr.ecr.us-east-1.amazonaws.com/pushd/imgproxy:$(git rev-parse HEAD)  -f docker/Dockerfile .
 docker push $AWS_ACCOUNT_ID.dkr.ecr.us-east-1.amazonaws.com/pushd/imgproxy:$(git rev-parse HEAD)