ai-instructions: Instructions file for GitHub Copilot

.github/instructions/spring-boot-traefik.instructions.md

ai-instructions spring-boot-traefik.instructions.md is an instructions file for GitHub Copilot from lsampaioweb/ai-instructions. It costs 560 tokens per session, scanned A, original, MIT.

A set of rules for routing a Spring Boot application through Traefik, a reverse proxy that receives web requests and sends them to services. It defines the required container labels, network, host rule, port, and HTTP or HTTPS entry point.

In plain words
What is it for?
Use it when configuring Docker Compose labels and Traefik routing for a Spring Boot app or an HTTP sidecar, including host names, ports, shared networks, and TLS termination.
Why use it?
It prevents application and proxy settings from disagreeing about where requests should go or which port is exposed. It also clarifies which part of the system owns health checks, security, TLS, and infrastructure settings.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is lsampaioweb/ai-instructions's own configuration. It tells GitHub Copilot how to work on ai-instructions itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ai-instructions configures →

Reuse

Borrowing it

Nothing to install: this file belongs to lsampaioweb/ai-instructions. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/lsampaioweb/ai-instructions/main/.github/instructions/spring-boot-traefik.instructions.md
Clone the repo
git clone --depth 1 https://github.com/lsampaioweb/ai-instructions

Made for: GitHub Copilot.

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README.md
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Per session 560 This file is loaded in full into every session.
When invoked 560 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00560 $0.00560
Opus 5.5 $0.00224 $0.00224
Sonnet 5.5 $0.00112 $0.00112
Haiku 4.5 $0.00056 $0.00056

Measured 1mo ago against content hash 8aac4d66e31a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ai-instructions spring-boot-traefik.instructions.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.github/instructions/spring-boot-traefik.instructions.md · 53 lines

How it starts

The opening of the file, as written. The whole thing — 53 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Spring Boot Traefik Contract

Apply this contract when a Spring Boot app (or HTTP sidecar UI) is routed through Traefik. Traefik proxy Compose, dashboard, sockets, and cert files stay in the infrastructure runbook for the environment.

Container owns image build, resources, healthchecks, profiles, and generic networks. TLS owns application keystores when the app terminates TLS itself. Actuator and security own health exposure and actuator credentials.

App Compose routing

  • Join the shared external Docker network used by Traefik and the apps it routes.
  • Enable Traefik on the service with traefik.enable=true.
  • Route with an explicit Host rule (for example Host(\app.example.com`)`). Changing a Traefik domain env var does not rewrite these labels — edit the Host rule when the suffix changes.
  • Set traefik.http.services.<name>.loadbalancer.server.port to the container listen port (aligned with the active Spring profile / SERVER_PORT).
  • Default entrypoint is web. For Traefik HTTPS termination, switch to websecure and tls=true together.
  • Keep Traefik → app traffic HTTP on that loadbalancer port. Do not point Traefik at an HTTPS-only app listener unless the deployment explicitly terminates TLS in the app (container TLS-boundary rule).

Traefik-only ingress

When Compose intends Traefik as the only ingress:

  • Do not publish app ports: on the host; Traefik is the entrypath.
  • Keep the Host rule, enable flag, loadbalancer port, and shared-network declarations present and consistent.

Optional service labels

  • HTTP UIs on other infra services may use the same label pattern. Non-HTTP protocols stay on their native ports and are not Traefik-routed.

Forbidden

  • Never expect Traefik to discover an app that is off the shared Traefik network or missing traefik.enable=true.
  • Never publish host ports: for an app that claims Traefik-only ingress.
  • Never leave Host labels on an old domain after changing the DNS suffix without updating those labels.
  • Never point loadbalancer.server.port at a different port than the process actually listens on inside the container.

Read the full file on GitHub · 53 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago Changed · -5 lines · -75 tokens per session 8aac4d66e31a
  2. 1mo ago First seen · 58 lines · 635 tokens per session scan A c69918b9fb54

Subscribe to this mod's changes

ai-instructions spring-boot-traefik.instructions.md is an instructions file published in the GitHub repository lsampaioweb/ai-instructions (1 stars, last pushed 5d ago), licensed MIT. It adds 560 tokens to every session, about $0.0022 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-30.

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