Magnuti/dockerfile.md

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Dockerfile snippets

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dockerfile.md

Dockerfile snippets

Non-root user on Alpine

FROM alpine:3.22

# Create non-root user
RUN addgroup -g 1000 nonrootgroup && \
    adduser -D -u 1000 -G nonrootgroup nonrootuser

WORKDIR /app

COPY --chown=nonrootuser:nonrootgroup ...

# Switch to non-root user
USER nonrootuser

Non-root user on Debian

# Create non-root system user with explicit UID/GID
RUN addgroup --system --gid 1001 nonrootgroup && \
    adduser --system --uid 1001 --ingroup nonrootgroup nonrootuser

WORKDIR /app

COPY --chown=nonrootuser:nonrootgroup ...

# Switch to non-root user
USER nonrootuser

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