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@@ -8,6 +8,7 @@ This guide outlines approaches for updating Docker containers, usually when upgr
- Manual: Direct commands to stop, remove, and rebuild containers.
- Dockcheck: Semi-automated with more control, suited for bulk updates.
- Watchtower: Fully automated, runs continuously to check and update containers.
- Portainer: Setup depending, mostly manual with UI.
You can choose any approach that fits your workflow.
@@ -107,6 +108,39 @@ docker run -d \
```
## 4. Portainer controlled image
This assumes you're using Portainer to manage Docker (or Docker Swarm) and want to pull the latest version of an image and redeploy the container.
> [!NOTE]
> * Portainer does **not auto-update** containers. For automation, use **Watchtower** or similar tools.
> * Make sure you have the [persistent volumes mounted or backups ready](BACKUPS.md) before recreating.
### 4.1 Steps to Update an Image in Portainer (Standalone Docker)
1. **Login to Portainer.**
2. Go to **"Containers"** in the left sidebar.
3. Find the container you want to update, click its name.
4. Click **"Recreate"** (top right).
5. ✅ **Tick**:
* **Pull latest image** (this ensures Portainer fetches the newest version from Docker Hub or your registry).
6. Click **"Recreate"** again.
7. Wait for the container to be stopped, removed, and recreated with the updated image.
---
### 4.2 For Docker Swarm Services
If you're using Docker Swarm (under **"Stacks"** or **"Services"**):
1. Go to **"Stacks"**.
2. Select the stack managing the container.
3. Click **"Editor"** (or "Update the Stack").
4. Add a version tag or use `:latest` if your image tag is `latest` (not recommended for production).
5. Click **"Update the Stack"**.
> ⚠ Portainer will not pull the new image unless the tag changes OR the stack is forced to recreate.
6. If image tag hasn't changed, go to **"Services"**, find the service, and click **"Force Update"**.
## Summary
- Manual: Ideal for individual or critical updates.