chore: add microservice architecture scaffolding (#7)

* chore: add microservice architecture scaffolding

Add Dockerfile, .dockerignore, .env.example, api/openapi.yaml,
deploy/docker/docker-compose.yml, docs/architecture.md, and
.github/workflows/docker.yml for GHCR build+push CI.

* fix: resolve lint and markdown CI failures

Remove unused func indexCI from shrink package and fix empty
badge links in architecture.md that triggered MD042.

* style: gofumpt format shrink.go

Author: Patel230

.dockerignore

@@ -0,0 +1,12 @@
+.git
+.github
+.gitignore
+*.md
+.env
+.env.*
+Dockerfile
+.dockerignore
+coverage.out
+docs/
+deploy/
+api/

.env.example

@@ -0,0 +1,14 @@
+# eyrie environment variables — copy to .env and fill in
+EYRIE_API_KEY=
+EYRIE_ALLOW_INSECURE_PUBLIC_API=false
+OPENAI_API_KEY=
+ANTHROPIC_API_KEY=
+GEMINI_API_KEY=
+OPENROUTER_API_KEY=
+CANOPYWAVE_API_KEY=
+XAI_API_KEY=
+ZAI_API_KEY=
+OPENAI_MODEL=gpt-4o
+ANTHROPIC_MODEL=claude-sonnet-4-5
+GEMINI_MODEL=gemini-2.0-flash
+HAWK_CONFIG_DIR=~/.eyrie

.github/workflows/docker.yml

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+name: Docker
+
+on:
+  push:
+    branches: [main]
+    tags: ["v*"]
+  pull_request:
+    branches: [main]
+    paths:
+      - "Dockerfile"
+      - "**.go"
+      - "go.mod"
+      - "go.sum"
+
+permissions:
+  contents: read
+  packages: write
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: graycodeai/eyrie
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GHCR
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=branch
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=sha,prefix=sha-
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          build-args: |
+            VERSION=${{ github.ref_name }}
+            COMMIT=${{ github.sha }}
+            BUILD_DATE=${{ github.event.head_commit.timestamp }}

Dockerfile

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+FROM golang:1.26.3-alpine AS builder
+
+RUN apk add --no-cache git ca-certificates tzdata
+
+WORKDIR /build
+COPY go.mod go.sum ./
+RUN go mod download && go mod verify
+
+COPY . .
+ARG VERSION=dev
+ARG COMMIT=none
+ARG BUILD_DATE=unknown
+RUN CGO_ENABLED=0 GOOS=linux go build -trimpath \
+    -ldflags="-s -w \
+      -X main.Version=${VERSION} \
+      -X main.Commit=${COMMIT} \
+      -X main.BuildDate=${BUILD_DATE}" \
+    -o eyrie ./cmd/eyrie
+
+FROM alpine:3.21
+RUN apk add --no-cache ca-certificates tini && \
+    adduser -D -u 1000 -h /data eyrie
+
+COPY --from=builder /build/eyrie /usr/local/bin/eyrie
+COPY --from=builder /usr/share/zoneinfo /usr/share/zoneinfo
+
+USER eyrie
+WORKDIR /data
+EXPOSE 8080
+
+ENTRYPOINT ["tini", "--", "eyrie"]
+CMD ["serve", "8080"]