documentation for scope input

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

src/context.ts

@@ -3,7 +3,6 @@ import * as core from '@actions/core';
 import * as yaml from 'js-yaml';
 
 import {Buildx} from '@docker/actions-toolkit/lib/buildx/buildx';
-import {Util} from '@docker/actions-toolkit/lib/util';
 
 export interface Inputs {
   registry: string;
@@ -70,7 +69,7 @@ export function getAuthList(inputs: Inputs): Array<Auth> {
 }
 
 export function scopeToConfigDir(registry: string, scope?: string): string {
-  if (scopeDisabled() || !scope || scope === '') {
+  if (!scope || scope === '') {
     return '';
   }
   let configDir = path.join(Buildx.configDir, 'config', registry === 'docker.io' ? 'registry-1.docker.io' : registry);
@@ -81,10 +80,3 @@ export function scopeToConfigDir(registry: string, scope?: string): string {
   }
   return configDir;
 }
-
-function scopeDisabled(): boolean {
-  if (process.env.DOCKER_LOGIN_SCOPE_DISABLED) {
-    return Util.parseBool(process.env.DOCKER_LOGIN_SCOPE_DISABLED);
-  }
-  return false;
-}

src/docker.ts

@@ -56,10 +56,9 @@ export async function loginECR(registry: string, username: string, password: str
 
 async function loginExec(registry: string, username: string, password: string, scope?: string): Promise<void> {
   let envs: {[key: string]: string} | undefined;
-  const configDir = context.scopeToConfigDir(registry, scope);
-  if (configDir !== '') {
+  if (scope && scope !== '') {
     envs = Object.assign({}, process.env, {
-      DOCKER_CONFIG: configDir
+      DOCKER_CONFIG: context.scopeToConfigDir(registry, scope)
     }) as {
       [key: string]: string;
     };