Yes — you can absolutely do most of this inside a **Debian-based container** (or even on Linux Mint, which is Ubuntu-based), with some caveats:

---

### 1️⃣ What works in a container

* **Debootstrap / building the ISO filesystem** – you can create the `chroot` and populate it inside a Debian container.
* **Copying your tools** (`asl-auth-host`, `asl-rescue`, helpers) into the ISO root.
* **Overlay scripts and directory structure** – fully container-compatible.
* **Generating the ISO** using `genisoimage` or `xorriso` – works fine in a container.

---

### 2️⃣ What **won’t fully work** in a container

* **ZFS pool creation** (`zpool create`) – you need **kernel support** for ZFS, and containers usually don’t have full access to `/dev` to create loopback-backed pools.

  * Workarounds:

    * Use a **loopback file inside the container** and mount ZFS on the host after building.
    * Or skip actual pool creation, just **pre-create the dataset folder structure**, and mount ZFS later on the real machine.

* **Boot testing** – you can build the ISO in a container, but to actually boot and test, you’ll need a VM or real hardware.

---

### 3️⃣ Suggested container workflow

```text
[Host Linux Mint]
       |
       v
[Debian container] --> run build_asl_auth_host_iso.sh
       |
       v
[Output ISO] --> copy to VM or USB to test boot
```

Steps:

1. Run a Debian container:

```bash
docker run -it --name asl-build -v $PWD/work:/work debian:bullseye bash
```

2. Inside the container, install required packages:

```bash
apt update
apt install -y debootstrap genisoimage squashfs-tools xorriso
```

3. Copy your scripts and binaries into the container (`/work` folder).

4. Run the ISO build script (`build_asl_auth_host_iso.sh`).

5. Copy the generated ISO back to your host for boot testing.

---

✅ **Bottom line:**

* You **can** build the ISO entirely in a container.
* For **ZFS pools or boot testing**, you need either host privileges or a VM for full functionality.
* On Linux Mint, the container approach keeps your host clean and reproducible.

---

If you want, I can **rewrite the build script specifically for container-friendly execution**, skipping ZFS creation but keeping the dataset folders so it’s ready to mount ZFS later. This is the smoothest workflow for Linux Mint.

Do you want me to do that?