Add config input

Signed-off-by: Gabriel Martinez <gabrielmartinez@sisti.pt>

README.md

@@ -129,6 +129,7 @@ Following inputs can be used as `step.with` keys
 | `install`          | Bool    | Sets up `docker build` command as an alias to `docker buildx` (default `false`) |
 | `use`              | Bool    | Switch to this builder instance (default `true`) |
 | `endpoint`         | String  | [Optional address for docker socket](https://github.com/docker/buildx/blob/master/docs/reference/buildx_create.md#description) or context from `docker context ls` |
+| `config`           | String  | [Optional config file path](https://github.com/docker/buildx/blob/master/docs/reference/buildx_create.md#config) |
 
 > `CSV` type must be a newline-delimited string
 > ```yaml

action.yml

@@ -32,6 +32,9 @@ inputs:
   endpoint:
     description: 'Optional address for docker socket or context from `docker context ls`'
     required: false
+  config:
+    description: 'Optional config file path'
+    required: false
 
 outputs:
   name:

src/context.ts

@@ -12,6 +12,7 @@ export interface Inputs {
   install: boolean;
   use: boolean;
   endpoint: string;
+  config: string;
 }
 
 export async function getInputs(): Promise<Inputs> {
@@ -24,7 +25,8 @@ export async function getInputs(): Promise<Inputs> {
       '--allow-insecure-entitlement security.insecure --allow-insecure-entitlement network.host',
     install: /true/i.test(core.getInput('install')),
     use: /true/i.test(core.getInput('use')),
-    endpoint: core.getInput('endpoint')
+    endpoint: core.getInput('endpoint'),
+    config: core.getInput('config')
   };
 }
 

src/main.ts

@@ -48,6 +48,9 @@ async function run(): Promise<void> {
       if (inputs.endpoint) {
         createArgs.push(inputs.endpoint);
       }
+      if (inputs.config) {
+        createArgs.push('--config', inputs.config);
+      }
       await exec.exec('docker', createArgs);
       core.endGroup();