fix: add qemu step for arm docker cross compiling

Author: jacobtread

.github/workflows/build-release.yml

@@ -120,6 +120,12 @@ jobs:
                   cp target/lambda/docbox-upload-completion-lambda/bootstrap.zip docbox-upload-completion-lambda.zip
               shell: bash
 
+            - name: Set up QEMU
+              uses: docker/setup-qemu-action@v3
+
+            - name: Set up Docker Buildx
+              uses: docker/setup-buildx-action@v3
+
             # Build the docker layers
             - name: Build poppler layer
               run: |

layers/make-poppler-layer-arm64.sh

@@ -2,7 +2,7 @@
 set -euo pipefail
 
 # Build the container
-docker buildx build --build-arg BASE_IMAGE=public.ecr.aws/lambda/provided:al2023-arm64 --platform linux/arm64 -f ./layers/poppler.Dockerfile -t poppler-lambda-layer-arm64 ./layers
+docker buildx build --build-arg BASE_IMAGE=public.ecr.aws/lambda/provided:al2023-arm64 --platform linux/arm64 -f ./layers/poppler.Dockerfile -t poppler-lambda-layer-arm64 --load ./layers
 
 # Run a container and copy out the zip then delete it
 CONTAINER_ID=$(docker create --platform linux/arm64 poppler-lambda-layer-arm64)