First commit

Dockerfile

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+# =============================================================================
+# Sub2API Multi-Stage Dockerfile
+# =============================================================================
+# Stage 1: Build frontend
+# Stage 2: Build Go backend with embedded frontend
+# Stage 3: Final minimal image
+# =============================================================================
+
+# -----------------------------------------------------------------------------
+# Stage 1: Frontend Builder
+# -----------------------------------------------------------------------------
+FROM node:20-alpine AS frontend-builder
+
+WORKDIR /app/frontend
+
+# Install dependencies first (better caching)
+COPY frontend/package*.json ./
+RUN npm ci
+
+# Copy frontend source and build
+COPY frontend/ ./
+RUN npm run build
+
+# -----------------------------------------------------------------------------
+# Stage 2: Backend Builder
+# -----------------------------------------------------------------------------
+FROM golang:1.24-alpine AS backend-builder
+
+# Build arguments for version info (set by CI)
+ARG VERSION=docker
+ARG COMMIT=docker
+ARG DATE
+
+# Install build dependencies
+RUN apk add --no-cache git ca-certificates tzdata
+
+WORKDIR /app/backend
+
+# Copy go mod files first (better caching)
+COPY backend/go.mod backend/go.sum ./
+RUN go mod download
+
+# Copy frontend dist from previous stage
+COPY --from=frontend-builder /app/frontend/../backend/internal/web/dist ./internal/web/dist
+
+# Copy backend source
+COPY backend/ ./
+
+# Build the binary (BuildType=release for CI builds)
+RUN CGO_ENABLED=0 GOOS=linux go build \
+    -ldflags="-s -w -X main.Commit=${COMMIT} -X main.Date=${DATE:-$(date -u +%Y-%m-%dT%H:%M:%SZ)} -X main.BuildType=release" \
+    -o /app/sub2api \
+    ./cmd/server
+
+# -----------------------------------------------------------------------------
+# Stage 3: Final Runtime Image
+# -----------------------------------------------------------------------------
+FROM alpine:3.19
+
+# Labels
+LABEL maintainer="Wei-Shaw <github.com/Wei-Shaw>"
+LABEL description="Sub2API - AI API Gateway Platform"
+LABEL org.opencontainers.image.source="https://github.com/Wei-Shaw/sub2api"
+
+# Install runtime dependencies
+RUN apk add --no-cache \
+    ca-certificates \
+    tzdata \
+    curl \
+    && rm -rf /var/cache/apk/*
+
+# Create non-root user
+RUN addgroup -g 1000 sub2api && \
+    adduser -u 1000 -G sub2api -s /bin/sh -D sub2api
+
+# Set working directory
+WORKDIR /app
+
+# Copy binary from builder
+COPY --from=backend-builder /app/sub2api /app/sub2api
+
+# Create data directory
+RUN mkdir -p /app/data && chown -R sub2api:sub2api /app
+
+# Switch to non-root user
+USER sub2api
+
+# Expose port (can be overridden by SERVER_PORT env var)
+EXPOSE 8080
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
+    CMD curl -f http://localhost:${SERVER_PORT:-8080}/health || exit 1
+
+# Run the application
+ENTRYPOINT ["/app/sub2api"]