feat: Build options

README.md

@@ -77,7 +77,9 @@ For example:
 PHP_VERSION=83
 ```
 
-### Docker arguments
+### Docker behaviour
+
+#### Run options
 
 You can also provide any additional [Docker `run` arguments](https://docs.docker.com/engine/reference/commandline/run/#options) using the `args` variable.
 
@@ -87,6 +89,13 @@ you can add the following to your `.phpctlrc` file:
 args=(-p 9501:9501)
 ```
 
+#### Build options
+
+You can also provide [build options](https://docs.docker.com/engine/reference/commandline/build/) to the build command using the `build` variable:
+```shell
+build=(--build-arg APP_ENV=dev --label phprocks)
+```
+
 ## Modules
 <details>
 <summary>For the default Docker image we have the following modules installed (click to expand).</summary>

src/docker.sh

@@ -1,5 +1,8 @@
 build() {
-    docker build --build-arg PHP="$PHP_VERSION" --build-arg COMPOSER_AUTH="$COMPOSER_AUTH" -t "$PHPCTL_IMAGE" .
+    docker build \
+        --build-arg PHP="$PHP_VERSION" \
+        --build-arg COMPOSER_AUTH="$COMPOSER_AUTH" \
+        ${build[@]} -t "$PHPCTL_IMAGE" .
 }
 
 push() {