Dockerfile

FROM golang:1.25-alpine AS builder

RUN apk add --no-cache git ca-certificates tzdata

WORKDIR /build

COPY go.mod go.sum ./
RUN go mod download
RUN go mod verify

COPY . .

RUN CGO_ENABLED=0 GOOS=linux go build -a -ldflags="-w -s" -o sdep .

FROM alpine:latest

RUN apk --no-cache add ca-certificates tzdata

RUN addgroup -g 1000 appuser && adduser -D -u 1000 -G appuser appuser

WORKDIR /app

COPY --from=builder /build/sdep .

# Copy runtime files
COPY --from=builder /build/templates ./templates
COPY --from=builder /build/static ./static
COPY --from=builder /build/migrations ./migrations

# Create storage directory
RUN mkdir -p /app/storage && chown -R appuser:appuser /app

# Switch to non-root
USER appuser

EXPOSE 8080

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:8080/health || exit 1

CMD ["./sdep"]