try entrypoint

.travis.yml

@@ -38,6 +38,8 @@ install:
   - ./travisci-install-buildx.sh
 
 script: |
+  docker run --rm arm32v7/python:3.11-alpine linux32 /usr/local/bin/python3.11 -c 'import distutils.util; print(distutils.util.get_platform())'
+  docker run --rm arm32v7/python:3.11-alpine linux32 /bin/sh -c '/usr/local/bin/python3.11 -m sysconfig | grep arm'
   (while true; do echo "travis_wait"; docker stats --no-stream; free; df -h; sleep 30; done) &
   WAIT_PID=$!
   COMMIT_SHA=${TRAVIS_COMMIT} ./build.sh

build.sh

@@ -14,16 +14,22 @@ export PLATFORM
 # get docker default multiarch image prefix for PLATFORM
 if [ "${PLATFORM}" == "x86_64" ]; then
 	MULTIARCH_PREFIX="amd64/"
+	BUILDX_PLATFORM="linux/amd64"
 elif [ "${PLATFORM}" == "i686" ]; then
 	MULTIARCH_PREFIX="i386/"
+	BUILDX_PLATFORM="linux/386"
 elif [ "${PLATFORM}" == "aarch64" ]; then
 	MULTIARCH_PREFIX="arm64v8/"
+	BUILDX_PLATFORM="linux/arm64/v8"
 elif [ "${PLATFORM}" == "ppc64le" ]; then
 	MULTIARCH_PREFIX="ppc64le/"
+	BUILDX_PLATFORM="linux/ppc64le"
 elif [ "${PLATFORM}" == "s390x" ]; then
 	MULTIARCH_PREFIX="s390x/"
+	BUILDX_PLATFORM="linux/s390x"
 elif [ "${PLATFORM}" == "armv7l" ]; then
 	MULTIARCH_PREFIX="arm32v7/"
+	BUILDX_PLATFORM="linux/arm/v7"
 else
 	echo "Unsupported platform: '${PLATFORM}'"
 	exit 1
@@ -82,6 +88,7 @@ if [ "${MANYLINUX_BUILD_FRONTEND}" == "docker" ]; then
 	docker build ${BUILD_ARGS_COMMON}
 elif [ "${MANYLINUX_BUILD_FRONTEND}" == "docker-buildx" ]; then
 	docker buildx build \
+		--platform ${BUILDX_PLATFORM} \
 		--load \
 		--cache-from=type=local,src=$(pwd)/.buildx-cache-${POLICY}_${PLATFORM} \
 		--cache-to=type=local,dest=$(pwd)/.buildx-cache-staging-${POLICY}_${PLATFORM} \

docker/build_scripts/install-entrypoint.sh

@@ -24,5 +24,5 @@ if [ "${AUDITWHEEL_PLAT}" = "manylinux2014_i686" ]; then
 fi
 
 if [ "${AUDITWHEEL_POLICY}" = "musllinux_1_1" ]; then
-	apk add --no-cache bash
+	apk add --no-cache bash util-linux
 fi

docker/manylinux-entrypoint

@@ -4,6 +4,8 @@ set -eu
 
 if [ "${AUDITWHEEL_ARCH}" == "i686" ]; then
 	linux32 "$@"
+elif [ "${AUDITWHEEL_ARCH}" == "armv7l" ] && [ "$(uname -m)" != "armv7l" ]; then
+	setarch armv7l "$@"
 else
 	exec "$@"
 fi