adding instructions to contribute. removing builder-build from build …

…file

README.md

@@ -43,3 +43,15 @@ In addition to the above components, your configuration directory must include t
 If you're new to configuring the Builder, you can find a minimal example config directory at [gardenlinux/builder_example](https://github.com/gardenlinux/builder_example). For a more comprehensive example, refer to the main [gardenlinux](https://github.com/gardenlinux/gardenlinux) repository.
 
 Feel free to explore these examples to gain a better understanding of how to effectively structure your own config directory.
+
+
+### Contribute
+
+If you like to modify the *Garden Linux Builder*, make your changes and create a new builder container by simply building the root folder with docker or podman:
+
+    sudo podman build -t localhost/builder .
+
+    # or
+
+    docker build -t localhost/builder .
+

build

@@ -58,11 +58,6 @@ container_mount_opts=(
         -v "$PWD/$target_dir:/builder/.build"
 )
 
-if [ "$container_image" = localhost/builder ]; then
-	dir="$(dirname -- "$(realpath -- "${BASH_SOURCE[0]}")")"
-	"$container_engine" build -t "$container_image" "$dir"
-fi
-
 repo="$(./get_repo)"
 commit="$(./get_commit)"
 timestamp="$(./get_timestamp)"