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Merged
eucyt merged 2 commits into from
May 19, 2025
Merged

feat: Add non-root user to Dockerfile for security #59

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a9095e8
feat: Add non-root user to Dockerfile for security
JasonShigemura May 3, 2025
9db98cf
Merge branch 'main' into feat/docker-non-root-user
eucyt May 19, 2025
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15 changes: 15 additions & 0 deletions Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -8,8 +8,14 @@ RUN --mount=type=cache,target=/root/.npm-production npm ci --ignore-scripts --om

RUN --mount=type=cache,target=/root/.npm npm run build

# --- Release Stage ---
FROM node:22-alpine AS release

# Set up a non-root user ('appuser'/'appgroup') to avoid running as root - good security practice!
# (-S is the Alpine option for a system user/group, suitable here)
RUN addgroup -S appgroup && adduser -S appuser -G appgroup

# Copy the built code and necessary package files from our builder stage
COPY --from=builder /app/dist /app/dist
COPY --from=builder /app/package.json /app/package.json
COPY --from=builder /app/package-lock.json /app/package-lock.json
Expand All @@ -18,6 +24,15 @@ ENV NODE_ENV=production

WORKDIR /app

# Give our new 'appuser' ownership of the application files inside /app
# Needs to happen after copying the files over
RUN chown -R appuser:appgroup /app

# Install *only* the production dependencies
RUN npm ci --ignore-scripts --omit-dev

# Now, switch to running as our non-root user for the actual app process
USER appuser

# Define how to start the application
ENTRYPOINT ["node", "dist/index.js"]