Pass environment/input argument to command argument in step function-CodePudding

I'm trying to setup a step function with an EKS run job. The job kicks off a pod in an EKS cluster and execute commands. As a start, I want the command to be echo $S3_BUCKET $S3_KEY, where both $S3_BUCKET and $S3_KEY are environment variables passed in from the step function input. Here is the container spec:

                "containers": [
                  {
                    "name": "my-container-spec",
                    "image": "****.dkr.ecr.****.amazonaws.com/****:latest",
                    "command": [
                      "echo"
                    ],
                    "args": [
                      "$S3_BUCKET", "$S3_KEY"
                    ],
                    "env": [
                      {
                        "name": "S3_BUCKET",
                        "value.$": "$.s3_bucket"
                      },
                      {
                        "name": "S3_KEY",
                        "value.$": "$.s3_key"
                      }
                    ]
                  }
                ],
                "restartPolicy": "Never"

Unfortunately, after the job is executed, the command only echo the raw test $S3_BUCKET $S3_KEY instead of the passed in value.

So the question here is how I should pass in an environment variable as an args. The environment variable doesn't have to be passed in, it could be other inherited variables.

CodePudding user response：

This will do the trick: args: ["$(S3_BUCKET), $(S3_KEY)"]