Running Docker in Proxmox LXC: Complete Guide and Best Practices
How to run Docker efficiently inside Proxmox LXC containers. Nesting, storage, GPU passthrough, networking, and production-ready configuration.
Next step: enter work email
Proxmox Clustering & High Availability for Self-Hosted Infrastructure
Enter your work email below. We send the guide link first; reply only if you want the Yash-routed system, owner, and deadline.
This is the measured start step. No name, no calendar booking, no commitment. One field, one owner.
Above-the-fold path: enter work email to start the checklist. Owner-review requests stay below the first guide step.
Why Docker in LXC (Not a VM)
LXC containers share the host kernel, making them dramatically lighter than VMs:
One-field PDF email
Proxmox Clustering & High Availability for Self-Hosted Infrastructure
Enter your work email to start the checklist handoff, then use the PDF link if you only need the document.
This is the measured start step. No name, no calendar booking, no commitment. One field, one owner.
<div style="margin:2.5rem auto;max-width:600px;width:100%;text-align:center;"><svg viewBox="0 0 600 220" xmlns="http://www.w3.org/2000/svg" style="width:100%;height:auto;"><rect width="600" height="220" rx="12" fill="#1a1a2e"/><rect x="200" y="15" width="200" height="40" rx="8" fill="#6366f1"/><text x="300" y="40" text-anchor="middle" fill="#ffffff" font-size="13" font-family="system-ui" font-weight="bold">Orchestrator</text><line x1="250" y1="55" x2="100" y2="90" stroke="#e2e8f0" stroke-width="1.5" stroke-dasharray="4,3"/><line x1="300" y1="55" x2="300" y2="90" stroke="#e2e8f0" stroke-width="1.5" stroke-dasharray="4,3"/><line x1="350" y1="55" x2="500" y2="90" stroke="#e2e8f0" stroke-width="1.5" stroke-dasharray="4,3"/><rect x="40" y="90" width="120" height="110" rx="8" fill="none" stroke="#3b82f6" stroke-width="1.5"/><text x="100" y="110" text-anchor="middle" fill="#3b82f6" font-size="11" font-family="system-ui">Node 1</text><rect x="55" y="120" width="90" height="25" rx="4" fill="#6366f1" opacity="0.7"/><text x="100" y="137" text-anchor="middle" fill="#ffffff" font-size="10" font-family="system-ui">Container A</text><rect x="55" y="150" width="90" height="25" rx="4" fill="#a855f7" opacity="0.7"/><text x="100" y="167" text-anchor="middle" fill="#ffffff" font-size="10" font-family="system-ui">Container B</text><rect x="240" y="90" width="120" height="110" rx="8" fill="none" stroke="#3b82f6" stroke-width="1.5"/><text x="300" y="110" text-anchor="middle" fill="#3b82f6" font-size="11" font-family="system-ui">Node 2</text><rect x="255" y="120" width="90" height="25" rx="4" fill="#2dd4bf" opacity="0.7"/><text x="300" y="137" text-anchor="middle" fill="#1a1a2e" font-size="10" font-family="system-ui">Container C</text><rect x="255" y="150" width="90" height="25" rx="4" fill="#6366f1" opacity="0.7"/><text x="300" y="167" text-anchor="middle" fill="#ffffff" font-size="10" font-family="system-ui">Container A</text><rect x="440" y="90" width="120" height="110" rx="8" fill="none" stroke="#3b82f6" stroke-width="1.5"/><text x="500" y="110" text-anchor="middle" fill="#3b82f6" font-size="11" font-family="system-ui">Node 3</text><rect x="455" y="120" width="90" height="25" rx="4" fill="#a855f7" opacity="0.7"/><text x="500" y="137" text-anchor="middle" fill="#ffffff" font-size="10" font-family="system-ui">Container B</text><rect x="455" y="150" width="90" height="25" rx="4" fill="#f59e0b" opacity="0.7"/><text x="500" y="167" text-anchor="middle" fill="#1a1a2e" font-size="10" font-family="system-ui">Container D</text></svg><p style="margin-top:0.75rem;font-size:0.85rem;color:#94a3b8;font-style:italic;line-height:1.4;">Container orchestration distributes workloads across multiple nodes for resilience and scale.</p></div>
|--------|-----|-----|
Running Docker inside an LXC container gives you the best of both worlds: lightweight containerization (LXC) with application-level packaging (Docker).
Configuration
LXC Config (Proxmox)
# /etc/pve/lxc/100.conf
arch: amd64
cores: 7
memory: 14336
swap: 88064
unprivileged: 1
features: nesting=1,keyctl=1Key settings:
<div style="margin:2.5rem auto;max-width:600px;width:100%;text-align:center;"><svg viewBox="0 0 600 200" xmlns="http://www.w3.org/2000/svg" style="width:100%;height:auto;"><rect width="600" height="200" rx="12" fill="#1a1a2e"/><rect x="60" y="30" width="140" height="140" rx="6" fill="none" stroke="#e2e8f0" stroke-width="1.5"/><text x="130" y="24" text-anchor="middle" fill="#94a3b8" font-size="10" font-family="system-ui">Production</text><rect x="70" y="40" width="120" height="22" rx="3" fill="#6366f1" opacity="0.8"/><circle cx="82" cy="51" r="3" fill="#2dd4bf"/><text x="130" y="55" text-anchor="middle" fill="#ffffff" font-size="9" font-family="system-ui">Web Server</text><rect x="70" y="68" width="120" height="22" rx="3" fill="#6366f1" opacity="0.8"/><circle cx="82" cy="79" r="3" fill="#2dd4bf"/><text x="130" y="83" text-anchor="middle" fill="#ffffff" font-size="9" font-family="system-ui">App Server</text><rect x="70" y="96" width="120" height="22" rx="3" fill="#a855f7" opacity="0.8"/><circle cx="82" cy="107" r="3" fill="#2dd4bf"/><text x="130" y="111" text-anchor="middle" fill="#ffffff" font-size="9" font-family="system-ui">Database</text><rect x="70" y="124" width="120" height="22" rx="3" fill="#f59e0b" opacity="0.6"/><circle cx="82" cy="135" r="3" fill="#2dd4bf"/><text x="130" y="139" text-anchor="middle" fill="#1a1a2e" font-size="9" font-family="system-ui">Monitoring</text><rect x="290" y="30" width="140" height="140" rx="6" fill="none" stroke="#e2e8f0" stroke-width="1.5"/><text x="360" y="24" text-anchor="middle" fill="#94a3b8" font-size="10" font-family="system-ui">Staging</text><rect x="300" y="40" width="120" height="22" rx="3" fill="#3b82f6" opacity="0.6"/><circle cx="312" cy="51" r="3" fill="#2dd4bf"/><text x="360" y="55" text-anchor="middle" fill="#ffffff" font-size="9" font-family="system-ui">Web Server</text><rect x="300" y="68" width="120" height="22" rx="3" fill="#3b82f6" opacity="0.6"/><circle cx="312" cy="79" r="3" fill="#2dd4bf"/><text x="360" y="83" text-anchor="middle" fill="#ffffff" font-size="9" font-family="system-ui">App Server</text><rect x="300" y="96" width="120" height="22" rx="3" fill="#a855f7" opacity="0.5"/><circle cx="312" cy="107" r="3" fill="#f59e0b"/><text x="360" y="111" text-anchor="middle" fill="#ffffff" font-size="9" font-family="system-ui">Database</text><line x1="200" y1="100" x2="290" y2="100" stroke="#2dd4bf" stroke-width="1.5" stroke-dasharray="5,3"/><text x="245" y="95" text-anchor="middle" fill="#2dd4bf" font-size="8" font-family="system-ui">VLAN</text><rect x="480" y="60" width="90" height="70" rx="6" fill="none" stroke="#f59e0b" stroke-width="1" stroke-dasharray="4,3"/><text x="525" y="85" text-anchor="middle" fill="#f59e0b" font-size="9" font-family="system-ui">Backup</text><text x="525" y="100" text-anchor="middle" fill="#f59e0b" font-size="9" font-family="system-ui">Storage</text><text x="525" y="115" text-anchor="middle" fill="#94a3b8" font-size="8" font-family="system-ui">3-2-1 Rule</text><line x1="430" y1="100" x2="478" y2="95" stroke="#f59e0b" stroke-width="1" stroke-dasharray="4,3"/></svg><p style="margin-top:0.75rem;font-size:0.85rem;color:#94a3b8;font-style:italic;line-height:1.4;">Server infrastructure: production and staging environments connected via VLAN with offsite backups.</p></div>
Docker Data Root
Move Docker's data directory to a dedicated mount point for better I/O:
{
"data-root": "/mnt/containers/docker"
}GPU Passthrough
For AI/ML workloads, pass the GPU to the LXC container:
lxc.cgroup2.devices.allow: c 195:* rwm
lxc.mount.entry: /dev/nvidia0 dev/nvidia0 none bind,optional,create=file
lxc.mount.entry: /dev/nvidiactl dev/nvidiactl none bind,optional,create=fileCommon Issues
1. AppArmor conflicts: Remove AppArmor inside LXC for Docker compatibility 2. PID namespace: Create /run/pve directory if missing 3. Storage drivers: Use overlay2 (default) on ext4 or xfs 4. safe.directory: Files pushed via pct have different ownership — use git safe.directory
<div style="margin:2.5rem auto;max-width:600px;width:100%;text-align:center;"><svg viewBox="0 0 600 200" xmlns="http://www.w3.org/2000/svg" style="width:100%;height:auto;"><rect width="600" height="200" rx="12" fill="#1a1a2e"/><rect x="30" y="30" width="100" height="130" rx="6" fill="none" stroke="#3b82f6" stroke-width="1.5"/><text x="80" y="55" text-anchor="middle" fill="#3b82f6" font-size="10" font-family="monospace">docker-</text><text x="80" y="70" text-anchor="middle" fill="#3b82f6" font-size="10" font-family="monospace">compose</text><text x="80" y="85" text-anchor="middle" fill="#3b82f6" font-size="10" font-family="monospace">.yml</text><line x1="45" y1="95" x2="115" y2="95" stroke="#3b82f6" stroke-width="0.5" opacity="0.5"/><rect x="50" y="105" width="50" height="8" rx="2" fill="#94a3b8" opacity="0.3"/><rect x="50" y="118" width="60" height="8" rx="2" fill="#94a3b8" opacity="0.3"/><rect x="50" y="131" width="40" height="8" rx="2" fill="#94a3b8" opacity="0.3"/><path d="M135,95 L175,95" stroke="#e2e8f0" stroke-width="2" marker-end="url(#arrow2)"/><defs><marker id="arrow2" markerWidth="8" markerHeight="6" refX="8" refY="3" orient="auto"><path d="M0,0 L8,3 L0,6" fill="#e2e8f0"/></marker></defs><rect x="180" y="20" width="130" height="35" rx="6" fill="#6366f1" opacity="0.85"/><text x="245" y="42" text-anchor="middle" fill="#ffffff" font-size="11" font-family="system-ui">Web App</text><rect x="180" y="62" width="130" height="35" rx="6" fill="#a855f7" opacity="0.85"/><text x="245" y="84" text-anchor="middle" fill="#ffffff" font-size="11" font-family="system-ui">API Server</text><rect x="180" y="104" width="130" height="35" rx="6" fill="#2dd4bf" opacity="0.85"/><text x="245" y="126" text-anchor="middle" fill="#1a1a2e" font-size="11" font-family="system-ui">Database</text><rect x="180" y="146" width="130" height="35" rx="6" fill="#f59e0b" opacity="0.85"/><text x="245" y="168" text-anchor="middle" fill="#1a1a2e" font-size="11" font-family="system-ui">Cache</text><rect x="370" y="40" width="200" height="130" rx="8" fill="none" stroke="#e2e8f0" stroke-width="1" stroke-dasharray="5,4"/><text x="470" y="62" text-anchor="middle" fill="#e2e8f0" font-size="10" font-family="system-ui">Docker Network</text><line x1="310" y1="37" x2="390" y2="80" stroke="#94a3b8" stroke-width="1" opacity="0.5"/><line x1="310" y1="79" x2="390" y2="100" stroke="#94a3b8" stroke-width="1" opacity="0.5"/><line x1="310" y1="121" x2="390" y2="120" stroke="#94a3b8" stroke-width="1" opacity="0.5"/><line x1="310" y1="163" x2="390" y2="140" stroke="#94a3b8" stroke-width="1" opacity="0.5"/><circle cx="400" cy="80" r="5" fill="#6366f1"/><circle cx="400" cy="100" r="5" fill="#a855f7"/><circle cx="400" cy="120" r="5" fill="#2dd4bf"/><circle cx="400" cy="140" r="5" fill="#f59e0b"/><text x="470" y="85" text-anchor="middle" fill="#94a3b8" font-size="10" font-family="system-ui">:3000</text><text x="470" y="105" text-anchor="middle" fill="#94a3b8" font-size="10" font-family="system-ui">:8080</text><text x="470" y="125" text-anchor="middle" fill="#94a3b8" font-size="10" font-family="system-ui">:5432</text><text x="470" y="145" text-anchor="middle" fill="#94a3b8" font-size="10" font-family="system-ui">:6379</text></svg><p style="margin-top:0.75rem;font-size:0.85rem;color:#94a3b8;font-style:italic;line-height:1.4;">Docker Compose defines your entire application stack in a single YAML file.</p></div>
Our Production Setup
TechSaaS runs Docker inside a single LXC container (CT 100) on Proxmox:
This setup handles all our production services with room to spare. The entire company runs on a single Proxmox node.
Need help with Proxmox + Docker infrastructure? Contact [email protected].
Instant guide email
Proxmox Clustering & High Availability for Self-Hosted Infrastructure
Enter your work email. We send the guide link first; reply only if you want the Yash-routed system, owner, and next deadline.
This is the measured start step. No name, no calendar booking, no commitment. One field, one owner.
Need the next owner and evidence step mapped?
Send the current system and deadline. Yash replies with the service path, first proof artifact, and handoff owner.