skip builder creation if one already exists with the same name

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

src/main.ts

@@ -124,6 +124,9 @@ actionsToolkit.run(
 
     if (inputs.driver !== 'docker') {
       await core.group(`Creating a new builder instance`, async () => {
+        if (await toolkit.builder.exists(inputs.name)) {
+          core.info(`Builder ${inputs.name} already exists, skipping creation`);
+        } else {
           const certsDriverOpts = Buildx.resolveCertsDriverOpts(inputs.driver, inputs.endpoint, {
             cacert: process.env[`${context.builderNodeEnvPrefix}_0_AUTH_TLS_CACERT`],
             cert: process.env[`${context.builderNodeEnvPrefix}_0_AUTH_TLS_CERT`],
@@ -140,6 +143,7 @@ actionsToolkit.run(
               throw new Error(res.stderr.match(/(.*)\s*$/)?.[0]?.trim() ?? 'unknown error');
             }
           });
+        }
       });
     }