diff --git a/podman-matrix/zz_build-images.sh b/podman-matrix/zz_build-images.sh
index 5e532a6..f01b214 100755
--- a/podman-matrix/zz_build-images.sh
+++ b/podman-matrix/zz_build-images.sh
@@ -12,7 +12,7 @@ if ! podman image exists localhost/matrixdotorg/synapse:${synapse_version}; then
     curl -s -- "https://codeload.github.com/matrix-org/synapse/tar.gz/refs/tags/${synapse_version}" | tar xz --strip-components 1 -C synapse/ && {
 	podman run -d --name buildkitd --privileged docker.io/moby/buildkit:latest &&
 	curl -sSLf https://github.com/moby/buildkit/releases/download/v0.9.3/buildkit-v0.9.3.linux-amd64.tar.gz | tar xz -C ~/ bin/buildctl &&
-        ~/bin/buildctl --addr=podman-container://buildkitd build --frontend dockerfile.v0 --local context=synapse/ --local dockerfile=synapse/docker/ --output type=tar | podman import - localhost/matrixdotorg/synapse:${synapse_version}
+        ~/bin/buildctl --addr=podman-container://buildkitd build --frontend dockerfile.v0 --local context=synapse/ --local dockerfile=synapse/docker/ --output type=tar | podman import --change 'EXPOSE 8008/tcp' --change 'EXPOSE 8009/tcp' --change 'EXPOSE 8448/tcp' --change 'ENTRYPOINT ["/start.py"]' - localhost/matrixdotorg/synapse:${synapse_version}
 	podman rm --force buildkitd &&
 	podman rmi docker.io/moby/buildkit:latest &&
 	rm -f ~/bin/buildctl