Envoy Binary from DockerHub

 docker pull envoyproxy/envoy:v1.21-latest
docker save -o envoy.tar envoyproxy/envoy:v1.21-latest
tar xf envoy.tar
find -name layer.tar -exec tar -xf {} \;
cp ./usr/local/bin/envoy envoy
lxc exec my-envoy1 -- mv /usr/bin/envoy /usr/bin/envoy.bkp
lxc file push envoy my-envoy1/usr/local/bin/envoy
lxc exec my-envoy1 -- envoy --version