Run as the user you intend to use. No need for prepended sudo.

vmprep.sh

#!/bin/bash

SWAP=4G
export DEBIAN_FRONTEND=noninteractive

# Install dependencies.
sudo apt-get update
sudo apt-get upgrade -y
sudo apt-get install -y build-essential libncursesw5-dev libreadline-gplv2-dev libssl-dev \
    libgdbm-dev libc6-dev libsqlite3-dev libbz2-dev libffi-dev git gdb ltrace strace radare2 \
    wabt binwalk foremost default-jdk default-jre procyon-decompiler golang cargo sagemath qemu \
    ca-certificates curl gnupg lsb-release z3

# Install pyenv.
curl https://pyenv.run | bash

cat << 'EOF' >> ~/.bashrc

# Add pyenv executable to PATH by adding
# the following to ~/.profile:

export PYENV_ROOT="$HOME/.pyenv"
export PATH="$PYENV_ROOT/bin:$PATH"

# Load pyenv automatically by appending
# the following to ~/.bashrc:

eval "$(pyenv init -)"

# and the following to ~/.profile:

eval "$(pyenv init --path)"

# Make sure to restart your entire logon session
# for changes to ~/.profile to take effect.

# Load pyenv-virtualenv automatically by adding
# the following to ~/.bashrc:

eval "$(pyenv virtualenv-init -)"

EOF

sleep 1

# Make very sure we load pyenv
source ~/.bashrc
export PYENV_ROOT="$HOME/.pyenv"
export PATH="$PYENV_ROOT/bin:$PATH"
eval "$(pyenv init -)"
eval "$(pyenv init --path)"
eval "$(pyenv virtualenv-init -)"

# Install python 3.9.9
pyenv install 3.9.9
pyenv global 3.9.9

# Install some useful packages.
pip install pwntools
pip install z3-solver
pip install numpy
pip install ipython

# Install gef
bash -c "$(curl -fsSL http://gef.blah.cat/sh)"

# Install docker
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update
sudo apt-get -y install docker-ce docker-ce-cli containerd.io
sudo groupadd docker
# Add any users you want to the group for docker perms.
# sudo usermod -aG docker $USER

# Keep angr downloaded.
sudo docker pull angr/angr

# lol swap space go whirr
sudo fallocate -l $SWAP /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile