Dockerfile

# Stage 1: Build frontend
FROM node:20-alpine AS frontend-builder
WORKDIR /app/frontend
COPY frontend/package.json frontend/package-lock.json ./
RUN --mount=type=cache,target=/root/.npm \
    npm ci
COPY frontend/ ./
RUN npm run build

# Stage 2: Build backend
FROM golang:1.25-alpine AS backend-builder
WORKDIR /app/backend
COPY backend/go.mod backend/go.sum ./
RUN --mount=type=cache,target=/go/pkg/mod \
    go mod download
COPY backend/ ./
ARG VERSION=dev
RUN --mount=type=cache,target=/go/pkg/mod \
    --mount=type=cache,target=/root/.cache/go-build \
    CGO_ENABLED=0 go build -ldflags="-s -w -X main.version=${VERSION}" -o /cqa-server .

# Stage 3: Production image
FROM alpine:3.21
RUN apk add --no-cache ca-certificates tzdata
WORKDIR /app

COPY --from=backend-builder /cqa-server /app/cqa-server
COPY --from=frontend-builder /app/frontend/dist /app/static

RUN mkdir -p /var/lib/cqa/files

EXPOSE 8080

ENTRYPOINT ["/app/cqa-server"]