feat: setup monorepo infra — Go API + Vue 3 + PostgreSQL + Dockerfile Dokploy

Monorepo com apps/api (Go 1.23 + chi + pgx) e apps/web (Vue 3 + Vite + TypeScript).
Dockerfile multi-stage consolida tudo em imagem única (~25MB) para deploy no Dokploy.
Migrations rodando na inicialização; Vue embedado no binário Go via //go:embed.

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

Dockerfile

@@ -0,0 +1,24 @@
+# ─── Stage 1: Build Vue frontend ───────────────────────────────────────────────
+FROM node:22-alpine AS web-builder
+WORKDIR /web
+COPY apps/web/package*.json ./
+RUN npm ci
+COPY apps/web/ .
+RUN npm run build
+
+# ─── Stage 2: Build Go binary (with embedded Vue assets) ────────────────────────
+FROM golang:1.23-alpine AS api-builder
+WORKDIR /api
+COPY apps/api/go.mod ./
+RUN go mod download
+COPY apps/api/ .
+# Inject the compiled frontend so //go:embed picks it up
+COPY --from=web-builder /web/dist ./static/dist
+RUN go mod tidy && CGO_ENABLED=0 GOOS=linux go build -o /bin/server ./cmd/server
+
+# ─── Stage 3: Minimal runtime image ─────────────────────────────────────────────
+FROM alpine:3.20
+RUN apk add --no-cache ca-certificates tzdata
+COPY --from=api-builder /bin/server /bin/server
+EXPOSE 8080
+ENTRYPOINT ["/bin/server"]