How to run "docker run hello-world" using AWS Batch - amazon-web-services

Question

I have build using boto3 a workflow that creates a compute environment, creates a job queue, registers a job definition and finally submits job. Trying 'ls' command works fine, however, when trying command 'docker run hello-world' does not work.
Code to create comp env:
response = client.create_compute_environment(
computeEnvironmentName=com_env_name,
type='MANAGED',
state='ENABLED',
computeResources={
'type': 'EC2',
'allocationStrategy': 'BEST_FIT',
'minvCpus': 0,
'maxvCpus': 5,
'instanceTypes': [
'c3.large',
],
'ec2Configuration': [{
'imageType': 'ECS_AL2',
}],
'subnets': [
subnet_id,
],
'securityGroupIds': [
sec_gr_id,
],
'instanceRole': 'ecsInstanceRole',
},
serviceRole = 'arn:aws:iam::blabla
)
The job queue is defined as:
response = batch_client.create_job_queue(
jobQueueName=queue_name,
state='ENABLED',
priority=1,
computeEnvironmentOrder=[
{
'order': 1,
'computeEnvironment': com_env_name
},
],
)
My goal is to run 'docker run hello-world'. The job definition is defined as follows:
response = batch.register_job_definition(
jobDefinitionName=job_def_name,
type='container',
containerProperties={
'image': 'custom-image',
'memory': 2048,
'vcpus': 2,
'command': ['ls'],
'environment': [
{
'name': "DOCKER_HOST",
'value': "unix:///var/run/docker.sock"
},
],
'volumes': [
{
'host': {
'sourcePath': '//var/run/docker.sock'
},
'name': 'docker'
}],
'mountPoints': [
{
'containerPath': '/var/run/docker.sock',
'sourceVolume': 'docker'
}],
},
)
Are the volumes and mount points properly set? What is missing? Is there a connection between dockers to establish? The output error after submitting the job is:
CannotStartContainerError: Error response from daemon: OCI runtime create failed: container_linux.go:380: starting container process caused: exec: "docker run hello-world": executable file not found in $PATH: unknown
The code for job submission is:
response = batch.submit_job(
jobDefinition=job_def_name,
jobName=job_nom,
jobQueue=job_queue_name,
containerOverrides={
'command': ['docker run hello-world',]
}

Answer 1

I notice two things:
You have an extra slash in your sourcePath
The error message you get seems to indicate that the docker executable doesn't exist in the image you're running. You'll need to use an image that supports docker in docker, such as the standard docker image