From f71a82f7857e13709d9f6a92202b6a53bc692752 Mon Sep 17 00:00:00 2001
From: Scott Yeager <yeagersm@gmail.com>
Date: Thu, 19 Jun 2025 22:17:52 -0700
Subject: [PATCH] Init

---
 docker-demo.sh | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 docker-demo.sh

diff --git a/docker-demo.sh b/docker-demo.sh
new file mode 100644
index 0000000..4b8a1cd
--- /dev/null
+++ b/docker-demo.sh
@@ -0,0 +1,66 @@
+#!/bin/bash
+
+# This script is meant to be run in a fresh Ubuntu VM. It demonstrates how to
+# assign Mycelium addresses to Docker containers, from a single Mycelium
+# instance running on the host. When the script completes, there will be a
+# container running with a Mycelium address assigned to it.
+
+# Install prerequisites
+apt update && apt install -y wget iproute2
+
+# Install Docker
+wget -qO- get.docker.com | bash
+
+# Install Mycelium
+MYCELIUM_VERSION="v0.5.6"
+wget https://github.com/threefoldtech/mycelium/releases/download/${MYCELIUM_VERSION}/mycelium-x86_64-unknown-linux-musl.tar.gz
+tar xf mycelium-x86_64-unknown-linux-musl.tar.gz
+cp mycelium /usr/local/bin/
+
+# Create Mycelium service
+cat > /etc/systemd/system/mycelium.service <<EOF
+[Unit]
+Description=Mycelium Network
+After=network.target
+
+[Service]
+ExecStart=/usr/local/bin/mycelium --peers tcp://188.40.132.242:9651 tcp://136.243.47.186:9651 tcp://185.69.166.7:9651 tcp://65.21.231.58:9651 tcp://209.159.146.190:9651
+Restart=always
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+systemctl daemon-reload
+systemctl enable --now mycelium
+
+# Symlink the docker net namespaces so we can use `ip netns` with them
+ln -Ts /var/run/docker/netns  /var/run/netns
+
+# Start container
+docker run -d --name mycelium-container ubuntu sleep infinity
+
+# Get container PID and network namespace
+NETNS_ID=$(docker inspect -f '{{.NetworkSettings.SandboxKey}}' mycelium-container | awk -F'/' '{print $NF}')
+
+# Create veth pair
+ip link add veth-host type veth peer name veth-container
+ip link set veth-host up
+
+# Move veth-container to container's netns
+ip link set veth-container netns $NETNS_ID
+ip netns exec $NETNS_ID ip link set veth-container up
+
+# Configure IPv6 addresses
+MYCELIUM_IP6=$(ip -6 a show dev mycelium | awk '/inet6.*global/ {print $2}' | cut -d'/' -f1 | cut -d: -f1-4)
+ip netns exec "$NETNS_ID" ip a add "${MYCELIUM_IP6}::1/64" dev veth-container
+
+# Make sure forwarding is enabled for ipv6
+sysctl -w net.ipv6.conf.all.forwarding=1
+
+# Add routes
+VETH_HOST_LL=$(ip -6 a show dev veth-host | awk '/inet6.*link/ {print $2}' | cut -d'/' -f1)
+ip netns exec "$NETNS_ID" ip r add 400::/7 via "$VETH_HOST_LL" dev veth-container
+ip r add "${MYCELIUM_IP6}::1/128" dev veth-host
+
+echo "Setup complete. Container should now have Mycelium connectivity."