fix(backend): solve 500 errors with auto-migrations and standardized filenames

Dockerfile

@@ -1,34 +1,33 @@
-# Build stage
-FROM golang:1.22-alpine AS builder
+# Multi-stage Dockerfile for FlowReader
 
+# Step 1: Build the React Frontend
+FROM node:20-alpine AS web-builder
+WORKDIR /app/web
+COPY web/package*.json ./
+RUN npm install
+COPY web/ ./
+RUN npm run build
+
+# Step 2: Build the Go Backend
+FROM golang:1.24-alpine AS builder
 WORKDIR /app
-
-# Install dependencies
 RUN apk add --no-cache git
-
-# Copy go mod files
-COPY go.mod go.sum* ./
+COPY go.mod go.sum ./
 RUN go mod download
-
-# Copy source code
 COPY . .
-
-# Build the application
+# Copy the built frontend from Step 1
+COPY --from=web-builder /app/web/dist ./web/dist
 RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-w -s" -o /server ./cmd/server
 
-# Final stage
+# Step 3: Final Production Image
 FROM alpine:3.19
-
 WORKDIR /app
-
-# Install wget for healthcheck
 RUN apk add --no-cache wget ca-certificates
-
-# Copy binary from builder
 COPY --from=builder /server /app/server
+# Copy the static files for the Go server to serve
+COPY --from=builder /app/web/dist /app/web/dist
+# Copy migration files for auto-migration
+COPY --from=builder /app/migrations /app/migrations
 
-# Expose port
 EXPOSE 8080
-
-# Run the application
 CMD ["/app/server"]