Probably requires QEMU for ARM64 builds

Author: Fydon

.github/workflows/webserver.yml

@@ -19,11 +19,14 @@ jobs:
     steps:
       - name: checkout otel webserver
         uses: actions/checkout@v3
+      - name: setup qemu
+        uses: docker/setup-qemu-action@master
       - name: setup buildx
         id: buildx
         uses: docker/setup-buildx-action@master
         with:
           install: true
+          platforms: linux/amd64,linux/arm64
       - name: cache docker layers
         uses: actions/cache@v3
         with:
@@ -63,11 +66,14 @@ jobs:
     steps:
       - name: checkout otel webserver
         uses: actions/checkout@v3
+      - name: setup qemu
+        uses: docker/setup-qemu-action@master
       - name: setup buildx
         id: buildx
         uses: docker/setup-buildx-action@master
         with:
           install: true
+          platforms: linux/amd64,linux/arm64
       # - name: cache docker layers
       #   uses: actions/cache@v3
       #   with: