Troubleshooting Docker and Kubernetes Containers/

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Summary: Troubleshooting Docker

Summary: Troubleshooting Docker

Get an overview of how to troubleshoot Docker.

We'll cover the following...

Introduction to Docker

In the “Docker Images Explained” lesson, we talked about Docker images. We explained that Docker images are formed through the aid of a Dockerfile. Here’s a sample of what a Dockerfile looks like:

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# Use the alpine image as the base image
FROM alpine
# Set the working directory
WORKDIR /
# Copy the "hello.txt" file to the root directory
COPY hello.txt /
# Set the default command to keep the container running
CMD ["tail", "-f", "/dev/null"]

We mentioned that Docker images are built with the command below.

docker build -t <image_name> .

We defined Docker images as packages that entail everything needed to run an application, including the application dependencies and libraries. We also described Dockerfile as ...