Handle Amazon ECR registries associated with other accounts

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

README.md

@@ -251,6 +251,33 @@ jobs:
           password: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
 ```
 
+If you need to log in to Amazon ECR registries associated with other accounts, you can use the `AWS_ECR_REGISTRY_IDS`
+environment variable:
+
+```yaml
+name: ci
+
+on:
+  push:
+    branches: master
+
+jobs:
+  login:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Login to ECR
+        uses: docker/login-action@v1
+        with:
+          registry: <aws-account-number>.dkr.ecr.<region>.amazonaws.com
+          username: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          password: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+        env:
+          AWS_ECR_REGISTRY_IDS: "012345678910 023456789012"
+```
+
+> Only available with [AWS CLI version 1](https://docs.aws.amazon.com/cli/latest/reference/ecr/get-login.html)
+
 You can also use the [Configure AWS Credentials](https://github.com/aws-actions/configure-aws-credentials) action in
 combination with this action:
 
@@ -311,41 +338,15 @@ jobs:
 
 > Replace `<region>` with its respective value (default `us-east-1`).
 
-You can also use the [Configure AWS Credentials](https://github.com/aws-actions/configure-aws-credentials) action in
-combination with this action:
-
-```yaml
-name: ci
-
-on:
-  push:
-    branches: master
-
-jobs:
-  login:
-    runs-on: ubuntu-latest
-    steps:
-      -
-        name: Configure AWS Credentials
-        uses: aws-actions/configure-aws-credentials@v1
-        with:
-          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
-          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-          aws-region: <region>
-      -
-        name: Login to Public ECR
-        uses: docker/login-action@v1
-        with:
-          registry: public.ecr.aws
-```
-
-> Replace `<region>` with its respective value.
-
 ### OCI Oracle Cloud Infrastructure Registry (OCIR)
+
 To push into OCIR in specific tenancy the [username](https://www.oracle.com/webfolder/technetwork/tutorials/obe/oci/registry/index.html#LogintoOracleCloudInfrastructureRegistryfromtheDockerCLI)
-must be placed in format `<tenancy>/<username>` (in case of federated tenancy use the format `<tenancy-namespace>/oracleidentitycloudservice/<username>`). 
-For password [create an auth token](https://www.oracle.com/webfolder/technetwork/tutorials/obe/oci/registry/index.html#GetanAuthToken). Save username and token
- [as a secrets](https://docs.github.com/en/actions/configuring-and-managing-workflows/creating-and-storing-encrypted-secrets#creating-encrypted-secrets-for-a-repository) in your GitHub repo. 
+must be placed in format `<tenancy>/<username>` (in case of federated tenancy use the format
+`<tenancy-namespace>/oracleidentitycloudservice/<username>`).
+
+For password [create an auth token](https://www.oracle.com/webfolder/technetwork/tutorials/obe/oci/registry/index.html#GetanAuthToken).
+Save username and token [as a secrets](https://docs.github.com/en/actions/configuring-and-managing-workflows/creating-and-storing-encrypted-secrets#creating-encrypted-secrets-for-a-repository)
+in your GitHub repo. 
 
 ```yaml
 name: ci
@@ -366,6 +367,7 @@ jobs:
           username: ${{ secrets.OCI_USERNAME }}
           password: ${{ secrets.OCI_TOKEN }}
 ```
+
 > Replace `<region>` with their respective values from [availability regions](https://docs.cloud.oracle.com/iaas/Content/Registry/Concepts/registryprerequisites.htm#Availab)
 
 ## Customizing

src/aws.ts

@@ -45,15 +45,19 @@ export const parseCLIVersion = async (stdout: string): Promise<string> => {
   return semver.clean(matches[1]);
 };
 
-export const getDockerLoginCmd = async (cliVersion: string, registry: string, region: string): Promise<string> => {
+export const getDockerLoginCmds = async (cliVersion: string, registry: string, region: string): Promise<string[]> => {
   let ecrCmd = (await isPubECR(registry)) ? 'ecr-public' : 'ecr';
   if (semver.satisfies(cliVersion, '>=2.0.0')) {
     return execCLI([ecrCmd, 'get-login-password', '--region', region]).then(pwd => {
-      return `docker login --username AWS --password ${pwd} ${registry}`;
+      return [`docker login --username AWS --password ${pwd} ${registry}`];
     });
   } else {
-    return execCLI([ecrCmd, 'get-login', '--region', region, '--no-include-email']).then(dockerLoginCmd => {
-      return dockerLoginCmd;
+    let args: Array<string> = [ecrCmd, 'get-login', '--region', region, '--no-include-email'];
+    if (process.env.AWS_ECR_REGISTRY_IDS) {
+      args.push('--registry-ids', process.env.AWS_ECR_REGISTRY_IDS);
+    }
+    return execCLI(args).then(dockerLoginCmds => {
+      return dockerLoginCmds.trim().split(`\n`);
     });
   }
 };

src/docker.ts

@@ -55,13 +55,19 @@ export async function loginECR(registry: string, username: string, password: str
   process.env.AWS_SECRET_ACCESS_KEY = password || process.env.AWS_SECRET_ACCESS_KEY;
 
   core.info(`⬇️ Retrieving docker login command through AWS CLI ${cliVersion} (${cliPath})...`);
-  const loginCmd = await aws.getDockerLoginCmd(cliVersion, registry, region);
+  const loginCmds = await aws.getDockerLoginCmds(cliVersion, registry, region);
 
   core.info(`🔑 Logging into ${registry}...`);
-  execm.exec(loginCmd, [], true).then(res => {
-    if (res.stderr != '' && !res.success) {
-      throw new Error(res.stderr);
-    }
-    core.info('🎉 Login Succeeded!');
+  loginCmds.forEach((loginCmd, index) => {
+    execm.exec(loginCmd, [], true).then(res => {
+      if (res.stderr != '' && !res.success) {
+        throw new Error(res.stderr);
+      }
+      if (loginCmds.length > 1) {
+        core.info(`🎉 Login Succeeded! (${index}/${loginCmds.length})`);
+      } else {
+        core.info('🎉 Login Succeeded!');
+      }
+    });
   });
 }