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Troubleshooting Docker and Kubernetes Containers

Solution: Fixing Common Issues with Docker

Explore how to identify and fix common Docker issues such as formatting errors in Docker Compose files, container failures, and library or package problems in Dockerfiles. Gain practical knowledge to troubleshoot container setups effectively.

We'll cover the following...

Problem 1: Fixing formatting errors and package issues

Let’s take a look at the solution and review the code. There are five issues encountered while trying to launch the services for task 1. Here are the problems and how to resolve them.

  • Line 3: Docker complains of a parsing issue and we notice that there isn’t a colon in front of our db entry.
    To resolve the error, we need to add a colon (:) in front of the db entry.

  • Line 6: Docker gives the services.db.environment must be a mapping error, and we observe that it’s a space issue.
    We fix that by adding a space between the hyphen (-) symbol and the MYSQL_ROOT_PASSWORD=admin entry.

  • Line 11: Docker gives the mapping values are not allowed in this context error, and we ...