Build Datadog Agent image

Follow the instructions below to build the Datadog Docker Agent image for a given <AGENT_VERSION> Agent version (above v6.0).

Clone the Datadog Agent repository:

git clone https://github.com/DataDog/datadog-agent.git

Go into the datadog-agent/Dockerfiles/agent/ folder:
```
cd datadog-agent/Dockerfiles/agent/
```
Switch to the Agent version branch you want to build the Agent from:
```
git branch <AGENT_VERSION> && git checkout <AGENT_VERSION>
```

Download the Agent Debian package that corresponds to the Agent version you want. Choose between the AMD and ARM architecture:

curl https://s3.amazonaws.com/apt.datadoghq.com/pool/d/da/datadog-agent_<AGENT_VERSION>-1_amd64.deb -o datadog-agent_<AGENT_VERSION>-1_amd64.deb

curl https://s3.amazonaws.com/apt.datadoghq.com/pool/d/da/datadog-agent_<AGENT_VERSION>-1_arm64.deb -o datadog-agent_<AGENT_VERSION>-1_arm64.deb

Note: The full list of Debian packages available can be found on this APT listing.

Build the Agent image by running:

docker build --build-arg <BUILD_ARGS> --file amd64/Dockerfile --pull --tag <IMAGE_TAG> .

docker build --build-arg <BUILD_ARGS> --file arm64/Dockerfile --pull --tag <IMAGE_TAG> .

For instance to build the Agent version 7.17.0 on the AMD architecture you would run:

docker build --build-arg DD_AGENT_ARTIFACT=./datadog-agent_7.17.0-1_amd64.deb --file amd64/Dockerfile --pull --tag documentation-example .

Available <BUILD_ARGS> are:

Argument	Definition	Default
PYTHON_VERSION	The Python runtime version for your Agent check.	`-`
WITH_JMX	If set to `true`, the Agent container contains the JMX fetch logic.	`false`
DD_AGENT_ARTIFACT	Path to the Agent Debian artifact package to use if not in the same folder.	`-`