buildx failed with: ERROR: failed to solve: process "/bin/sh -c if [ -f /custom/custom_opa.tar.gz ]; then cd /custom && tar xzf custom_opa.tar.gz && go build -ldflags=\"-extldflags=-static\" -o /opa && rm -rf /custom; else case $(uname -m) in x86_64) curl -L -o /opa https://openpolicyagent.org/downloads/latest/opa_linux_amd64_static ;; aarch64) curl -L -o /opa https://openpolicyagent.org/downloads/latest/opa_linux_arm64_static ;; *) echo \"Unknown architecture.\" && exit 1 ;; esac; fi" did not complete successfully: exit code: 1