Docker Foundations·Practice drills 5

Drill 11: Change a value — Health checks and restart policies

Describe what would change if you edited one value.

Beginner 5 min read Lesson 114 of 300 Challenge included
What you will be able to do
  • Describe what would change if you edited one value.

Practice task

Describe what would change if you edited one value.

DockerfileDockerfile
FROM node:22-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci --omit=dev
COPY . .
EXPOSE 3000
HEALTHCHECK --interval=30s --timeout=3s --retries=3 CMD wget -qO- http://localhost:3000/health || exit 1
CMD ["node", "server.js"]
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Describe what would change if you edited one value.

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Lesson 114 of 300 · 0% of course