Dockerfile

# Build stage (Frontend)
FROM node:18-alpine AS frontend-builder
WORKDIR /app/frontend
COPY frontend/package*.json ./
RUN npm ci
COPY frontend ./
RUN npm run build

# Build stage (Backend)
FROM golang:1.22-alpine AS backend-builder
WORKDIR /app

# Install dependencies first (better caching)
COPY go.mod go.sum* ./
RUN go mod download

# Copy source and build
COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -o /api ./cmd/api
RUN CGO_ENABLED=0 GOOS=linux go build -o /migrate ./cmd/migrate

# Runtime stage
FROM alpine:3.19

RUN apk --no-cache add ca-certificates

WORKDIR /

COPY --from=backend-builder /api /api
COPY --from=backend-builder /migrate /migrate
COPY --from=backend-builder /app/migrations /migrations

# Copy frontend build as static files
COPY --from=frontend-builder /app/frontend/dist /static

EXPOSE 8080

CMD ["/bin/sh", "-c", "/migrate && /api"]