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docs(adr): Docker surface decisions (compose, base image, Dockerfile split) - #853
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Three linked decisions from `/research-and-decide` composite on chore/docker-overhaul: 1. `2026-05-13-frontend-dockerfile-keep-separate.md` — Keep separate (deferred consolidation). 12-month review trigger + 3 hard escalation triggers. 2. `2026-05-13-orchestration-stay-on-compose.md` — Stay on docker-compose v2. Explicit acknowledgement of docker.sock blast radius (per critic). 5 hard revisit triggers including 90-day observability-data checkpoint. 3. `2026-05-13-base-image-stay-on-alpine.md` — Flipped from Phase-1's recommendation (bookworm-slim). Critic surfaced that PR #846's root cause was prebuilt-binary availability for @discordjs/opus, not musl vs glibc. Migration would not have prevented the break. Phase-1 research dispatched 3 parallel agents (general-purpose). Phase-2 critic (Opus) stress-tested all three leaders + identified cross-decision interactions. All revisit triggers are concrete + measurable. Branch parks on docs/docker-decision-adrs because PR #848 is open against release/v2.11.0 and feedback_no_pr_stacking_2026-05-09 limits to 1 PR per base.
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📝 WalkthroughWalkthroughThis PR adds three architectural decision records documenting recent infrastructure choices: staying on Alpine base images for production containers, keeping the frontend Dockerfile separate rather than consolidating, and continuing with Docker Compose v2 for orchestration. All decisions include rationale, alternatives, consequences, and explicit revisit conditions. ChangesInfrastructure Architecture Decisions
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Actionable comments posted: 1
🧹 Nitpick comments (3)
docs/decisions/2026-05-13-frontend-dockerfile-keep-separate.md (2)
61-61: ⚡ Quick winFile should end with a newline.
POSIX convention and many tools expect text files to end with a newline character.
📝 Proposed fix
- `feedback_tbd_release_branches` memory +🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@docs/decisions/2026-05-13-frontend-dockerfile-keep-separate.md` at line 61, The file docs/decisions/2026-05-13-frontend-dockerfile-keep-separate.md is missing a trailing newline; update the file to ensure it ends with a single newline character (add a line break at EOF) so it follows POSIX conventions and satisfies tools that expect files to terminate with a newline.
18-18: 💤 Low valueInconsistent terminology: "Pre-build" vs "prebuilt".
Line 18 uses "Pre-build" while line 12 (and elsewhere in the codebase) uses "prebuilt". Consider standardizing to "prebuilt" for consistency.
📝 Proposed terminology fix
-4. Pre-build dist in CI and ship a slim nginx +4. Prebuilt dist in CI and ship a slim nginx🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@docs/decisions/2026-05-13-frontend-dockerfile-keep-separate.md` at line 18, The document uses inconsistent terminology: change the phrase "Pre-build" to "prebuilt" so it matches the rest of the codebase; update the occurrence of "Pre-build dist in CI and ship a slim nginx" to "Prebuilt dist in CI and ship a slim nginx" (search for the literal "Pre-build" and replace it with "prebuilt" in the decision document to standardize wording).docs/decisions/2026-05-13-orchestration-stay-on-compose.md (1)
57-57: ⚡ Quick winFile should end with a newline.
POSIX convention and many tools expect text files to end with a newline character.
📝 Proposed fix
- Critic Phase-2 findings on docker.sock + escalation criteria +🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@docs/decisions/2026-05-13-orchestration-stay-on-compose.md` at line 57, Add a single trailing newline character to the end of the document 2026-05-13-orchestration-stay-on-compose.md so the file ends with a newline (POSIX-compatible); simply open the file and ensure there is a newline after the last line/paragraph and save the file.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Inline comments:
In `@docs/decisions/2026-05-13-frontend-dockerfile-keep-separate.md`:
- Around line 1-23: The ADR "Keep `Dockerfile.frontend` separate (deferred
consolidation)" currently says "Accepted (deferred)" but contradicts an open
superseding PR; update the ADR to remove the ambiguity by either changing the
Status line to "Superseded" and adding a short reference to PR `#851` (include PR
number and a brief note that it consolidates the Dockerfiles), or if you prefer
to keep "Accepted (deferred)" temporarily, add an explicit "Supersession note"
below the Decision that acknowledges PR `#851` is open and intends to supersede
this ADR; ensure you edit the document title/Status block and add a one-line
footnote referencing PR `#851` and its intent so readers aren’t misled.
---
Nitpick comments:
In `@docs/decisions/2026-05-13-frontend-dockerfile-keep-separate.md`:
- Line 61: The file
docs/decisions/2026-05-13-frontend-dockerfile-keep-separate.md is missing a
trailing newline; update the file to ensure it ends with a single newline
character (add a line break at EOF) so it follows POSIX conventions and
satisfies tools that expect files to terminate with a newline.
- Line 18: The document uses inconsistent terminology: change the phrase
"Pre-build" to "prebuilt" so it matches the rest of the codebase; update the
occurrence of "Pre-build dist in CI and ship a slim nginx" to "Prebuilt dist in
CI and ship a slim nginx" (search for the literal "Pre-build" and replace it
with "prebuilt" in the decision document to standardize wording).
In `@docs/decisions/2026-05-13-orchestration-stay-on-compose.md`:
- Line 57: Add a single trailing newline character to the end of the document
2026-05-13-orchestration-stay-on-compose.md so the file ends with a newline
(POSIX-compatible); simply open the file and ensure there is a newline after the
last line/paragraph and save the file.
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docs/decisions/2026-05-13-base-image-stay-on-alpine.mddocs/decisions/2026-05-13-frontend-dockerfile-keep-separate.mddocs/decisions/2026-05-13-orchestration-stay-on-compose.md
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Records three ADRs produced by
/research-and-decidecovering the Docker surface:@discordjs/opusprebuilt-binary gap exists in all variants; musl was a false leadADRs document the investigation rationale so future contributors understand why these choices were made and when to revisit.
Summary by CodeRabbit