Docker Operations Capstone

What you will be able to do

• Distinguish build artifact from runtime security in a realistic docker operations capstone case.
• Interpret the operational evidence and boundary associated with service test.
• Choose an appropriate action involving published release without exceeding the named workload scope.
• Verify recovery proof through an observable runtime result and reproducible handoff.

01

Frame Docker Operations Capstone

Combine build, runtime, network, storage, health, resource, registry, and recovery decisions into one auditable Docker operation.

A small inventory API must be built, tested, published, run with durable data, and recovered safely after a deliberately injected failure.

Keep declared state, runtime state, observable evidence, access boundaries, and recovery outcomes separate. Begin with the smallest read-only inspection that identifies the exact image, container, Pod, controller, network, storage object, or policy in scope.

02

Build artifact

The capstone begins with one reproducible image built from bounded inputs. Within docker operations capstone, this role answers one specific container or orchestration question and keeps its own evidence.

Build and identify the image by immutable digest. Apply that action to the named workload before expanding scope, changing another resource, or discarding the current state.

Respect this boundary: do not continue from an uncommitted or unexplained build context. The observable result is specific: the image digest maps to the reviewed source state.

03

Runtime security

Runtime settings control identity, credentials, ports, and writable boundaries around the service. Within docker operations capstone, this role answers one specific container or orchestration question and keeps its own evidence.

Run with the least access and only required secret injection. Apply that action to the named workload before expanding scope, changing another resource, or discarding the current state.

Respect this boundary: do not use privileged mode to bypass an unexplained permission problem. The observable result is specific: the service starts without unnecessary privileges.

04

Service test

A capstone test must exercise the published interface and its durable data behavior. Within docker operations capstone, this role answers one specific container or orchestration question and keeps its own evidence.

Create and retrieve an inventory record through the public API. Apply that action to the named workload before expanding scope, changing another resource, or discarding the current state.

Respect this boundary: do not accept a healthy process as proof of correct user behavior. The observable result is specific: the api request succeeds and the record persists.

05

Published release

A release registry provides the distribution boundary for the tested artifact. Within docker operations capstone, this role answers one specific container or orchestration question and keeps its own evidence.

Push the exact tested digest and verify its remote identity. Apply that action to the named workload before expanding scope, changing another resource, or discarding the current state.

Respect this boundary: do not replace the approved content by retagging an unknown image. The observable result is specific: the remote repository resolves the approved digest.

06

Recovery proof

Operational completion includes evidence that the service and data can be restored after failure. Within docker operations capstone, this role answers one specific container or orchestration question and keeps its own evidence.

Replace the container and restore the protected data into a clean volume. Apply that action to the named workload before expanding scope, changing another resource, or discarding the current state.

Respect this boundary: do not call persistence alone a recovery plan. The observable result is specific: a replacement deployment serves the restored inventory record.

07

Apply Docker Operations Capstone to One Workload

Use one bounded workload decision: A small inventory API must be built, tested, published, run with durable data, and recovered safely after a deliberately injected failure.

First, build and identify the image by immutable digest. Then, run with the least access and only required secret injection. Preserve both observations with the exact resource identity before changing runtime state.

Next, create and retrieve an inventory record through the public api. After that, push the exact tested digest and verify its remote identity. Close the task only after you replace the container and restore the protected data into a clean volume.

08

Recap Before Practice and Prove

Build artifact: The capstone begins with one reproducible image built from bounded inputs. In this workload, build and identify the image by immutable digest. Preserve the boundary: do not continue from an uncommitted or unexplained build context.

Runtime security: Runtime settings control identity, credentials, ports, and writable boundaries around the service. In this workload, run with the least access and only required secret injection. Preserve the boundary: do not use privileged mode to bypass an unexplained permission problem.

Service test: A capstone test must exercise the published interface and its durable data behavior. In this workload, create and retrieve an inventory record through the public api. Preserve the boundary: do not accept a healthy process as proof of correct user behavior.

Published release: A release registry provides the distribution boundary for the tested artifact. In this workload, push the exact tested digest and verify its remote identity. Preserve the boundary: do not replace the approved content by retagging an unknown image.

Recovery proof: Operational completion includes evidence that the service and data can be restored after failure. In this workload, replace the container and restore the protected data into a clean volume. Preserve the boundary: do not call persistence alone a recovery plan.