Update Quickstart Docs

website/docs/build.md

@@ -1,5 +1,5 @@
 ---
-title: Building with Dalec
+title: Building Packages and Containers with Dalec - An Overview
 ---
 
 In this section, we'll go over how to build packages and containers with Dalec.
@@ -16,7 +16,7 @@ For more information on the Dalec spec, see the [Dalec Specification](spec.md).
 
 Dalec can build packages and containers from source code repositories. This is done by specifying the source code repository and the build steps in the Dalec spec. The source code is checked out, built, and the resulting artifacts are included in the package.
 
-For more information on building from source, see [Building from source](build-source.md).
+For an intro guide to building from source code repos, see [Quickstart](quickstart.md).
 
 ## Virtual Packages
 

website/docs/container-only-builds.md

@@ -0,0 +1,29 @@
+---
+title: Container-only builds
+---
+
+# Container-only builds
+
+It is possible to use Dalec when you wish to build a minimal image from scratch or based on one of Dalec's supported distros (see [Targets](targets.md) for a list of these) with only certain packages installed. To do this, simply define a Dalec spec with only runtime dependencies specified. The resulting image will contain only the specified packages and their dependencies.
+
+```yaml
+name: my-minimal-image
+version: 0.1.0
+description: A minimal distroless image with only curl and shell access
+revision: 1
+
+dependencies:
+    runtime:
+        curl:
+        bash:
+
+image:
+    entrypoint: /bin/bash
+
+```
+
+Then, to build:
+`docker build -f my-minimal-image.yml --target=mariner2 -t my-minimal-image:0.1.0 .`
+
+This will produce a minimal image from `scratch` with only curl and bash installed.
+How does this work? Dalec will create a [Virtual Package](virtual-packages.md) which has only the specified runtime dependencies and install this in the target base image. This is where the `--target=mariner2` flag comes in. Even though the resulting image is from scratch, it will have the specified packages installed from mariner2 repos.

website/docs/intro.md

@@ -18,4 +18,4 @@ Our goal is to provide a secure and reproducible way to build packages and conta
 - ✍️ Support for signed packages
 - 🔐 Ensure supply chain security with build time SBOMs, and Provenance attestations
 
-👉 To get started with building packages and containers, please see [Building with Dalec](build.md)!
+👉 To get started with building packages and containers, please see [Quickstart](quickstart.md)!