rebuild.sh

#!/bin/bash

set -eo pipefail

echo "[1/8] stopping existing instance"
singularity-compose stop || true

echo "[2/8] cleanup sbr0 network interface"
sudo ip link delete sbr0 || true

echo "[3/8] copy local bridge config to usr folder and backup original config"
if ! [ -f 00_bridge.conflist.original ]; then
    sudo cp /usr/local/etc/singularity/network/00_bridge.conflist 00_bridge.conflist.original
    sudo cp 00_bridge.conflist /usr/local/etc/singularity/network/00_bridge.conflist
fi

# (docker-compose build --no-cache equivalent) #OPTIONAL
echo "[4/8] cleaning cache and old image"
singularity cache clean -f || true

echo "[5/8] removing old sif image" #OPTIONAL
rm -f redis.sif

echo "[6/8] removing etc.hosts and resolv.conf"
rm -f etc.hosts
rm -f resolv.conf

echo "[7/8] running singularity-compose"
singularity-compose build && singularity-compose up -d

echo "[8/8] show instances"
singularity-compose ps

printf "\n"
echo "NOTE: to recover original /usr/local/etc/singularity/network/00_bridge.conflist run:"
echo "sudo cp 00_bridge.conflist.original /usr/local/etc/singularity/network/00_bridge.conflist"