docker cache code example

Example 1: docker clear cache

# Rebuild the image
docker build --no-cache

# Pull the base images again and rebuild
docker build --no-cache --pull

# Also works with docker-compose
docker-compose build --no-cache

# If nothing of the above works for you, you could also prune everything
docker system to prune

Example 2: docker clear cache

docker volume prune

Example 3: dockerfile example

FROM ubuntu:18.04
COPY . /app
RUN make /app
CMD python /app/app.py

Example 4: dockerfile run app cmd

RUN apt-get install python3
CMD echo "Hello world"
ENTRYPOINT echo "Hello world"