Docker Build on RaspberryPI (arm64) Fails Due to Non-Existent Network

[happening-primal]

Issue

In the readme Build from source section, my build for arm64 architecture was failing on a raspberrypi (see the bottom for partial build output) during the apt update portion of the build due to no available network. I fixed it by adding '--network=host' to the build commands as per the below.

 git clone https://github.com/simplex-chat/simplexmq
 cd simplexmq
 git checkout stable
 DOCKER_BUILDKIT=1 docker build --network=host -t local/smp-server --build-arg APP="smp-server" --build-arg APP_PORT="5223" . # For xmp-server
 DOCKER_BUILDKIT=1 docker build --network=host -t local/xftp-server --build-arg APP="xftp-server" --build-arg APP_PORT="443" . # For xftp-server

Hope this helps someone in the future if you are having issues with the compile.

Partial build output

[+] Building 153.4s (5/18) docker:default
[internal] load build definition from Dockerfile 0.3s
transferring dockerfile: 1.75kB 0.1s
[internal] load metadata for docker.io/library/ubuntu:22.04 7.4s
[internal] load .dockerignore 0.1s
transferring context: 2B 0.0s
[internal] load build context 1.4s
transferring context: 26.16kB 1.2s
CACHED [build 1/12] FROM docker.io/library/ubuntu:22.04@sha256:340d9b015b194dc6e2a13938944e0d016e57b9679963fdeb9ce021daac430221 0.0s
[stage-1 2/3] RUN apt-get update && apt-get install -y openssl libnuma-dev 145.2s
# Ign:3 http://ports.ubuntu.com/ubuntu-ports jammy-backports InRelease
# Ign:4 http://ports.ubuntu.com/ubuntu-ports jammy-security InRelease
# Err:1 http://ports.ubuntu.com/ubuntu-ports jammy InRelease
# Temporary failure resolving 'ports.ubuntu.com'
# Err:2 http://ports.ubuntu.com/ubuntu-ports jammy-updates InRelease
# Temporary failure resolving 'ports.ubuntu.com'
[build 2/12] RUN apt-get update && apt-get install -y curl git build-essential libgmp3-dev zlib1g-dev llvm-12 llvm-12-dev libnuma-dev li 145.2s
# Ign:3 http://ports.ubuntu.com/ubuntu-ports jammy-backports InRelease
# Ign:4 http://ports.ubuntu.com/ubuntu-ports jammy-security InRelease
# Err:1 http://ports.ubuntu.com/ubuntu-ports jammy InRelease
# Temporary failure resolving 'ports.ubuntu.com'
# Err:2 http://ports.ubuntu.com/ubuntu-ports jammy-updates InRelease
# Temporary failure resolving 'ports.ubuntu.com'