Choosing small base images (alpine, slim) in Docker - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the Dockerfile to use a small base image for a Python app.

Docker

FROM python:[1]
COPY app.py /app/
CMD ["python", "/app/app.py"]

Drag options to blanks, or click blank then click option'

Alatest

Balpine

Cbuster

Dwindows

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'latest' results in a larger image.

Using 'windows' is not suitable for Linux containers.

Using python:alpine gives a small base image, which reduces image size and speeds up downloads.

2fill in blank

medium

Complete the Dockerfile to use a slim version of Node.js base image.

Docker

FROM node:[1]
WORKDIR /app
COPY package.json ./
RUN npm install
COPY . .
CMD ["node", "index.js"]

Drag options to blanks, or click blank then click option'

Abuster

Balpine

Cstretch

Dslim

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'alpine' may cause compatibility issues with some Node.js packages.

The node:slim image is smaller than the full version but includes more tools than alpine.

3fill in blank

hard

Fix the error in the Dockerfile to use Alpine base image for a Go app.

Docker

FROM golang:[1]
WORKDIR /go/src/app
COPY . .
RUN go build -o app
CMD ["./app"]

Drag options to blanks, or click blank then click option'

Awindows

Blatest

Calpine

Dbuster

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'windows' causes incompatibility with Linux commands.

Using 'latest' results in a larger image.

Using golang:alpine provides a small base image suitable for Go apps.

4fill in blank

hard

Fill both blanks to create a Python dictionary comprehension that filters packages by size and uses a small base image.

Docker

packages = {pkg: size for pkg, size in package_sizes.items() if size [1] 50 and pkg.startswith('[2]')}

Drag options to blanks, or click blank then click option'

A<

B>

Calpine

Dslim

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' filters larger packages.

Using 'slim' does not match the package prefix in this example.

The comprehension filters packages smaller than 50 and starting with 'alpine', a small base image.

5fill in blank

hard

Fill all three blanks to create a Dockerfile snippet that uses a small base image, sets working directory, and runs a command.

Docker

FROM [1]
WORKDIR [2]
CMD ["[3]"]

Drag options to blanks, or click blank then click option'

Apython:alpine

B/app

Cpython

Dnode:slim

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'node:slim' with Python commands causes errors.

Not setting a working directory can cause file path issues.

This Dockerfile uses the small python:alpine image, sets the working directory to /app, and runs the python command.