> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/appsec-rules/iac-security/compute/appsec-docker-9.md).

# Docker APT is used misconfiguration detected in code

## Docker APT is used misconfiguration detected in code

### Rule Details

|                        |                                            |
| ---------------------- | ------------------------------------------ |
| Cortex AppSec Rule ID  | APPSEC\_DOCKER\_9                          |
| Category - Subcategory | Public Exposure - Encryption And Protocols |
| Provider               | OTHER                                      |
| Severity               | LOW                                        |
| Framework              | DOCKER                                     |

### Impact

This rule detects whether the `apt`` (Advanced Package Tool) command is used within Dockerfile RUN instructions. We recommend that you do not run the` apt\`\` command within Dockerfiles, due to potential instability and security vulnerabilities.

### How to Fix

Replace `apt`` with` apt-get\`\` for package management within Dockerfile RUN commands.

In the example below, `apt` is replaced with `apt-get` to ensures a more reliable and secure package installation process.

## Bad example

### \[source,go]

RUN apt update && apt install -y nginx

## Good example

### RUN apt-get update && apt-get install -y nginx


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