Crucial Exams

CompTIA Linux+ XK0-006 (V8) Practice Question

You need to distribute a Go web service as a minimal, production-ready container image. The security policy says the image must contain only the statically-linked binary, be based on scratch, and run as the unprivileged UID 1001. Which Dockerfile snippet satisfies all of these requirements?

  • FROM golang:1.22-alpine
WORKDIR /app
COPY . .
RUN go build -o server
USER 1001
CMD ["./server"]

  • # Stage 1 - build
FROM golang:1.22-alpine AS build
WORKDIR /src
COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -o /app/server

# Stage 2 - minimal runtime
FROM scratch
COPY --from=build /app/server /server
USER 1001
ENTRYPOINT ["/server"]

  • # Stage 1 - build
FROM golang:1.22-alpine AS build
WORKDIR /src
COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -o /app/server

# Stage 2 - minimal runtime
FROM scratch
COPY --from=build /app/server /server
UID 1001
ENTRYPOINT ["/server"]

  • # Builder
FROM golang:1.22-alpine AS builder
WORKDIR /src
COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -o /server

# Runtime (still has OS)
FROM alpine:latest
COPY --from=builder /server /server
USER 1001
ENTRYPOINT ["/server"]
CompTIA Linux+ XK0-006 (V8)
Services and User Management
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