Document Docker Compose deployment workflow

Dockerfile

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+# syntax=docker/dockerfile:1.7
+
+ARG GO_VERSION=1.26.3
+ARG NODE_VERSION=22
+
+FROM --platform=$BUILDPLATFORM golang:${GO_VERSION}-alpine AS api-builder
+ARG TARGETOS=linux
+ARG TARGETARCH=amd64
+ARG GOPROXY=https://goproxy.cn,direct
+
+ENV GOPROXY=$GOPROXY
+
+RUN apk add --no-cache ca-certificates git
+WORKDIR /src
+
+COPY go.work go.work.sum ./
+COPY apps/api/go.mod apps/api/go.sum apps/api/
+RUN --mount=type=cache,target=/go/pkg/mod \
+    --mount=type=cache,target=/root/.cache/go-build \
+    cd apps/api && \
+    for attempt in 1 2 3; do \
+      go mod download && exit 0; \
+      echo "go mod download failed, retrying (${attempt}/3)" >&2; \
+      sleep $((attempt * 3)); \
+    done; \
+    go mod download
+
+COPY apps/api apps/api
+RUN --mount=type=cache,target=/go/pkg/mod \
+    --mount=type=cache,target=/root/.cache/go-build \
+    cd apps/api && \
+    CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -trimpath -ldflags="-s -w" -o /out/easyai-ai-gateway ./cmd/gateway && \
+    CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -trimpath -ldflags="-s -w" -o /out/easyai-ai-gateway-migrate ./cmd/migrate
+
+FROM alpine:3.22 AS api
+
+RUN apk add --no-cache ca-certificates tzdata wget && \
+    adduser -D -H -u 10001 appuser
+WORKDIR /app
+
+COPY --from=api-builder /out/easyai-ai-gateway /app/easyai-ai-gateway
+COPY --from=api-builder /out/easyai-ai-gateway-migrate /app/easyai-ai-gateway-migrate
+COPY apps/api/migrations /app/migrations
+
+RUN mkdir -p /app/data/static/generated /app/data/static/uploaded && \
+    chown -R appuser:appuser /app
+
+USER appuser
+EXPOSE 8088
+ENV APP_ENV=production \
+    HTTP_ADDR=:8088 \
+    AI_GATEWAY_GENERATED_STORAGE_DIR=/app/data/static/generated \
+    AI_GATEWAY_UPLOADED_STORAGE_DIR=/app/data/static/uploaded
+
+CMD ["/app/easyai-ai-gateway"]
+
+FROM --platform=$BUILDPLATFORM node:${NODE_VERSION}-alpine AS web-builder
+
+WORKDIR /src
+RUN npm install -g pnpm@10.18.1
+
+COPY package.json pnpm-lock.yaml pnpm-workspace.yaml nx.json ./
+COPY apps/web/package.json apps/web/package.json
+COPY packages/contracts/package.json packages/contracts/package.json
+RUN --mount=type=cache,id=pnpm-store,target=/root/.local/share/pnpm/store \
+    pnpm install --frozen-lockfile
+
+COPY packages packages
+COPY apps/web apps/web
+
+ARG VITE_GATEWAY_API_BASE_URL=/gateway-api
+ENV VITE_GATEWAY_API_BASE_URL=$VITE_GATEWAY_API_BASE_URL
+RUN pnpm --filter @easyai-ai-gateway/web build
+
+FROM nginx:1.27-alpine AS web
+
+COPY docker/nginx.conf /etc/nginx/conf.d/default.conf
+COPY --from=web-builder /src/apps/web/dist /usr/share/nginx/html
+
+EXPOSE 80