feat(cli): add image flag to svc/job init

[iamhopaul123]

Add image flag to svc init and job init so that users can opt-in using existing docker image instead of building from local Dockerfile, and write to the manifest.

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[iamhopaul123]

Service

$ copilot svc init -i 1234567890.dkr.ecr.us-west-2.amazonaws.com/my-app/my-svc:94e505c

# Your service name will be used in naming your resources like log groups, ECS services, etc.
name: my-app
# The "architecture" of the service you're running.
type: Load Balanced Web Service

image:
  # The Docker image used for your service. Images in the Docker Hub registry are available by default. Other repositories are specified with either repository-url/image:tag or repository-url/image@digest.
  location: 1234567890.dkr.ecr.us-west-2.amazonaws.com/my-app/my-svc:94e505c
  # Port exposed through your container to route traffic to it.
  port: 5000

http:
  # Requests to this path will be forwarded to your service. 
  # To match all requests you can use the "/" path. 
  path: '/'
  # You can specify a custom health check path. The default is "/"
  # healthcheck: '/'
  # You can enable sticky sessions.
  # stickiness: true

# Number of CPU units for the task.
cpu: 256
# Amount of memory in MiB used by the task.
memory: 512
# Number of tasks that should be running in your service.
count: 1

Job

$ copilot job init -i 1234567890.dkr.ecr.us-west-2.amazonaws.com/my-app/my-svc:94e505c

# Your job name will be used in naming your resources like log groups, ECS Tasks, etc.
name: my-job

# The "architecture" of the job you're running.
type: Scheduled Job

image:
  # The Docker image used for your service.
  location: 1234567890.dkr.ecr.us-west-2.amazonaws.com/my-app/my-svc:94e505c

# Number of CPU units for the task.
cpu: 256
# Amount of memory in MiB used by the task.
memory: 512

# The trigger for your job. You can specify a cron schedule or keyword (@weekly) or a rate (2h, 1h30m, 15m)
schedule: "@hourly"

Both service and job are deployed successfully.

[efekarakus]

hmm is this necessary? Does {{if .ImageConfig.Location}} evaluate to true if the pointer points to an empty string?

[iamhopaul123]

yeah it is necessary. otherwise i tried and the result is like this:

image:
  # Docker build arguments. You can specify additional overrides here. Supported: dockerfile, context, args.
  build: Dockerfile
  # The Docker image used for your service.
  location: 
  # Port exposed through your container to route traffic to it.
  port: 5000

[huanjani]

Pretty cool!