fix: docker build error based on platform

Author: johan-hultberg-work

hello-world-python/Dockerfile

@@ -1,8 +1,9 @@
 # syntax=docker/dockerfile:1
 
 ARG UBUNTU_VERSION=24.04
+ARG DEVICE_PLATFORM=linux/arm64/v8
 
-FROM arm64v8/ubuntu:${UBUNTU_VERSION}
+FROM --platform=$DEVICE_PLATFORM ubuntu:${UBUNTU_VERSION}
 
 RUN DEBIAN_FRONTEND=noninteractive \
     apt-get update && apt-get install -y --no-install-recommends \

hello-world-python/README.md

@@ -44,6 +44,9 @@ Define and export the application image name in `APP_NAME` for use in the Docker
 ```sh
 export APP_NAME=hello-world-python
 
+# Install qemu to allow build for a different architecture
+docker run --rm --privileged multiarch/qemu-user-static --credential yes --persistent yes
+
 docker build --tag $APP_NAME .
 ```
 

minimal-ml-inference/Dockerfile

@@ -4,9 +4,10 @@ ARG RUNTIME_VERSION=2.0.0
 ARG REPO=axisecp
 ARG IMAGE=acap-runtime
 ARG UBUNTU_VERSION=24.04
+ARG DEVICE_PLATFORM=linux/arm64/v8
 
-FROM ${REPO}/${IMAGE}:${RUNTIME_VERSION}-protofiles AS proto-image
-FROM arm64v8/ubuntu:${UBUNTU_VERSION} AS runtime-image
+FROM --platform=$DEVICE_PLATFORM ${REPO}/${IMAGE}:${RUNTIME_VERSION}-protofiles AS proto-image
+FROM --platform=$DEVICE_PLATFORM ubuntu:${UBUNTU_VERSION} AS runtime-image
 
 RUN DEBIAN_FRONTEND=noninteractive \
     apt-get update && apt-get install -y --no-install-recommends \

object-detector-python/Dockerfile

@@ -4,9 +4,10 @@ ARG RUNTIME_VERSION=2.0.0
 ARG REPO=axisecp
 ARG IMAGE=acap-runtime
 ARG UBUNTU_VERSION=24.04
+ARG DEVICE_PLATFORM=linux/arm64/v8
 
-FROM ${REPO}/${IMAGE}:${RUNTIME_VERSION}-protofiles AS proto-image
-FROM arm64v8/ubuntu:${UBUNTU_VERSION} AS runtime-image
+FROM --platform=$DEVICE_PLATFORM ${REPO}/${IMAGE}:${RUNTIME_VERSION}-protofiles AS proto-image
+FROM --platform=$DEVICE_PLATFORM ubuntu:${UBUNTU_VERSION} AS runtime-image
 
 RUN DEBIAN_FRONTEND=noninteractive \
     apt-get update && apt-get install -y --no-install-recommends \

opencv-qr-decoder-python/Dockerfile

@@ -4,9 +4,10 @@ ARG RUNTIME_VERSION=2.0.0
 ARG REPO=axisecp
 ARG IMAGE=acap-runtime
 ARG UBUNTU_VERSION=24.04
+ARG DEVICE_PLATFORM=linux/arm64/v8
 
-FROM ${REPO}/${IMAGE}:${RUNTIME_VERSION}-protofiles AS proto-image
-FROM arm64v8/ubuntu:${UBUNTU_VERSION} AS runtime-image
+FROM --platform=$DEVICE_PLATFORM ${REPO}/${IMAGE}:${RUNTIME_VERSION}-protofiles AS proto-image
+FROM --platform=$DEVICE_PLATFORM ubuntu:${UBUNTU_VERSION} AS runtime-image
 
 RUN DEBIAN_FRONTEND=noninteractive \
     apt-get update && apt-get install -y --no-install-recommends \

opencv-qr-decoder-python/README.md

@@ -45,6 +45,9 @@ Define and export the application image name in `APP_NAME` for use in the Docker
 ```sh
 export APP_NAME=acap-opencv-qr-decoder-python
 
+# Install qemu to allow build for a different architecture
+docker run --rm --privileged multiarch/qemu-user-static --credential yes --persistent yes
+
 docker build --tag $APP_NAME .
 ```
 

parameter-api-python/Dockerfile

@@ -4,9 +4,10 @@ ARG RUNTIME_VERSION=2.0.0
 ARG REPO=axisecp
 ARG IMAGE=acap-runtime
 ARG UBUNTU_VERSION=24.04
+ARG DEVICE_PLATFORM=linux/arm64/v8
 
-FROM ${REPO}/${IMAGE}:${RUNTIME_VERSION}-protofiles AS proto-image
-FROM arm64v8/ubuntu:${UBUNTU_VERSION} AS runtime-image
+FROM --platform=$DEVICE_PLATFORM ${REPO}/${IMAGE}:${RUNTIME_VERSION}-protofiles AS proto-image
+FROM --platform=$DEVICE_PLATFORM ubuntu:${UBUNTU_VERSION} AS runtime-image
 
 RUN DEBIAN_FRONTEND=noninteractive \
     apt-get update && apt-get install -y --no-install-recommends \

pose-estimator-with-flask/Dockerfile

@@ -4,9 +4,10 @@ ARG RUNTIME_VERSION=2.0.0
 ARG REPO=axisecp
 ARG IMAGE=acap-runtime
 ARG UBUNTU_VERSION=24.04
+ARG DEVICE_PLATFORM=linux/arm64/v8
 
-FROM ${REPO}/${IMAGE}:${RUNTIME_VERSION}-protofiles AS proto-image
-FROM arm64v8/ubuntu:${UBUNTU_VERSION} AS runtime-image
+FROM --platform=$DEVICE_PLATFORM ${REPO}/${IMAGE}:${RUNTIME_VERSION}-protofiles AS proto-image
+FROM --platform=$DEVICE_PLATFORM ubuntu:${UBUNTU_VERSION} AS runtime-image
 
 RUN DEBIAN_FRONTEND=noninteractive \
     apt-get update && apt-get install -y --no-install-recommends \

web-server/Dockerfile

@@ -1,8 +1,9 @@
 # syntax=docker/dockerfile:1
 
 ARG UBUNTU_VERSION=24.04
+ARG DEVICE_PLATFORM=linux/arm64/v8
 
-FROM arm64v8/ubuntu:${UBUNTU_VERSION} as runtime-image
+FROM --platform=$DEVICE_PLATFORM ubuntu:${UBUNTU_VERSION}
 
 # Setup environment variables
 ENV DEBIAN_FRONTEND=noninteractive