feat: support command override

action.yml

@@ -25,6 +25,9 @@ inputs:
   docker-labels:
     description: "Create/Override options inside dockerLabels. Each variable is key=value, you can specify multiple variables with multi-line YAML."
     required: false
+  command:
+    description: 'The command used by ECS to start the container image'
+    required: false
 outputs:
   task-definition:
     description: 'The path to the rendered task definition file'

dist/index.js

@@ -21,6 +21,7 @@ async function run() {
     const logConfigurationLogDriver = core.getInput("log-configuration-log-driver", { required: false });
     const logConfigurationOptions = core.getInput("log-configuration-options", { required: false });
     const dockerLabels = core.getInput('docker-labels', { required: false });
+    const command = core.getInput('command', { required: false });
 
     // Parse the task definition
     const taskDefPath = path.isAbsolute(taskDefinitionFile) ?
@@ -43,6 +44,10 @@ async function run() {
     }
     containerDef.image = imageURI;
 
+    if (command) {
+      containerDef.command = command.split(' ')
+    }
+
     if (environmentVariables) {
 
       // If environment array is missing, create it

index.js

@@ -15,6 +15,7 @@ async function run() {
     const logConfigurationLogDriver = core.getInput("log-configuration-log-driver", { required: false });
     const logConfigurationOptions = core.getInput("log-configuration-options", { required: false });
     const dockerLabels = core.getInput('docker-labels', { required: false });
+    const command = core.getInput('command', { required: false });
 
     // Parse the task definition
     const taskDefPath = path.isAbsolute(taskDefinitionFile) ?
@@ -37,6 +38,10 @@ async function run() {
     }
     containerDef.image = imageURI;
 
+    if (command) {
+      containerDef.command = command.split(' ')
+    }
+
     if (environmentVariables) {
 
       // If environment array is missing, create it

index.test.js

@@ -375,4 +375,75 @@ describe('Render task definition', () => {
 
         expect(core.setFailed).toBeCalledWith('Invalid task definition: Could not find container definition with matching name');
     });
+
+    test('renders a task definition with docker command', async () => {
+        core.getInput = jest
+            .fn()
+            .mockReturnValueOnce('task-definition.json')
+            .mockReturnValueOnce('web')
+            .mockReturnValueOnce('nginx:latest')
+            .mockReturnValueOnce('EXAMPLE=here')
+            .mockReturnValueOnce('awslogs')
+            .mockReturnValueOnce('awslogs-create-group=true\nawslogs-group=/ecs/web\nawslogs-region=us-east-1\nawslogs-stream-prefix=ecs')
+            .mockReturnValueOnce('key1=value1\nkey2=value2')
+            .mockReturnValueOnce('npm start --nice --please');
+
+        await run();
+
+        expect(tmp.fileSync).toHaveBeenNthCalledWith(1, {
+            tmpdir: '/home/runner/work/_temp',
+            prefix: 'task-definition-',
+            postfix: '.json',
+            keep: true,
+            discardDescriptor: true
+        });
+
+        expect(fs.writeFileSync).toHaveBeenNthCalledWith(1, 'new-task-def-file-name',
+            JSON.stringify({
+                family: 'task-def-family',
+                containerDefinitions: [
+                    {
+                        name: "web",
+                        image: "nginx:latest",
+                        environment: [
+                            {
+                                name: "FOO",
+                                value: "bar"
+                            },
+                            {
+                                name: "DONT-TOUCH",
+                                value: "me"
+                            },
+                            {
+                                name: "HELLO",
+                                value: "world"
+                            },
+                            {
+                                name: "EXAMPLE",
+                                value: "here"
+                            }
+                        ],
+                        logConfiguration: {
+                            logDriver: "awslogs",
+                            options: {
+                                "awslogs-create-group": "true",
+                                "awslogs-group": "/ecs/web",
+                                "awslogs-region": "us-east-1",
+                                "awslogs-stream-prefix": "ecs"
+                            }
+                        },
+                        dockerLabels : {
+                            "key1":"value1",
+                            "key2":"value2"
+                        },
+                        command : ["npm", "start", "--nice", "--please"]
+                    },
+                    {
+                        name: "sidecar",
+                        image: "hello"
+                    }
+                ]
+            }, null, 2)
+        );
+    });
 });