Application Container
An application container is an instance created from a container image. When started, it runs isolated processes with chosen settings and limits.
image@digest + runtime config + isolation controls -> container instance@sha256:7ac…PID 1Runtime limits500m · 256Miimage@digest + runtime config + isolation controls -> container instanceOPSAnother example
One checkout image starts twice. Each container gets its own ID, settings, memory limit, and writable data.
Main parts
- 01Image reference and digest
- 02Container ID
- 03Process and start command
- 04Settings and environment
- 05Writable layer and mounts
- 06Resource and security limits
Use it when
Use this term for an image instance that is running or stopped. Check its digest, settings, mounts, network, user, and limits.
Do not use it when
Do not treat every container as a VM or complete security wall. Isolation depends on the runtime and its settings.
Name used in code
image@digest + runtime config + isolation controls -> container instance Before you ship
Before publishing, check the exact repository, branch, target, and diff. Keep unpublished work. Pass review and CI checks. Record conflict and data-loss risks, release order, traceability, recovery, and rollback.
Outcome: Use Application Container to release or recover the change safely, with a clear record. User context: One checkout image starts twice. Each container gets its own ID, settings, memory limit, and writable data. Delivery concept or operation: Application Container. Why it fits: Use this term for an image instance that is running or stopped. Check its digest, settings, mounts, network, user, and limits. Do not use it when: Do not treat every container as a VM or complete security wall. Isolation depends on the runtime and its settings. Delivery requirements: Name the code repository and target. List preconditions, changes, review and CI checks, conflict and data-loss risks, release order, and the rollback or recovery command. Repository safeguards: Keep unpublished work and a clear history. Do not run destructive steps without an explicit backup. Check the exact code diff and remote target before publishing. Acceptance criteria: Review the intended diff and pass all required checks. Keep the target version traceable. Practice failure recovery and keep published history clear. Evidence and limits (evidence boundary): No single official standard controls the whole term. Its meaning may change across teams, platforms, or frameworks. Unknowns to confirm: Repository, branch, team activity, release environment, approval owner, protected checks, and rollback target.
Check this request
Review the current use of Application Container. Definition: An application container is an instance created from a container image. When started, it runs isolated processes with chosen settings and limits. Release checks: Before publishing, check the exact repository, branch, target, and diff. Keep unpublished work. Pass review and CI checks. Record conflict and data-loss risks, release order, traceability, recovery, and rollback. Before changing code, report the evidence you found, gaps, severity, and the smallest safe fix.