Here is the complete output of the “./sandbox up” script:
Sending build context to Docker daemon 9.728kB
Step 1/13 : FROM ubuntu:18.04
---> c3c304cb4f22
Step 2/13 : ARG channel
---> Using cache
---> 4fe4845f7814
Step 3/13 : ENV DEBIAN_FRONTEND noninteractive
---> Using cache
---> b03b3d708879
Step 4/13 : RUN apt-get update && apt-get install -y ca-certificates
---> Running in 302b6a7db495
W: Unable to read /etc/apt/apt.conf.d/01-vendor-ubuntu - open (13: Permission denied)
W: Unable to read /etc/apt/apt.conf.d/01autoremove - open (13: Permission denied)
W: Unable to read /etc/apt/apt.conf.d/01autoremove-kernels - open (13: Permission denied)
W: Unable to read /etc/apt/apt.conf.d/70debconf - open (13: Permission denied)
W: Unable to read /etc/apt/apt.conf.d/docker-autoremove-suggests - open (13: Permission denied)
W: Unable to read /etc/apt/apt.conf.d/docker-clean - open (13: Permission denied)
W: Unable to read /etc/apt/apt.conf.d/docker-gzip-indexes - open (13: Permission denied)
W: Unable to read /etc/apt/apt.conf.d/docker-no-languages - open (13: Permission denied)
E: Error reading the CPU table
The command '/bin/sh -c apt-get update && apt-get install -y ca-certificates' returned a non-zero code: 100