[Solved] Which of the following is the correct way to define a sidecar container in a Docker Compose file? — Ans: Define multiple services in the same docker-compose.yml file, where one service... | Docker

Docker - Production Patterns

Which of the following is the correct way to define a sidecar container in a Docker Compose file?

A

Define multiple services in the same <code>docker-compose.yml</code> file, where one service is the main app and another is the sidecar

BUse the <code>depends_on</code> key to run containers sequentially

CRun two containers with the same image name in separate Compose files

DUse <code>docker run --sidecar</code> command to start a sidecar container

Step-by-Step Solution

Solution:

Step 1: Review Docker Compose structure for multiple containers
Docker Compose allows defining multiple services in one file, each representing a container.
Step 2: Understand sidecar container definition
Sidecar containers are defined as separate services alongside the main app service in the same Compose file.
Final Answer:
Define multiple services in the same docker-compose.yml file, where one service is the main app and another is the sidecar -> Option A
Quick Check:
Sidecar in Compose = multiple services in one file [OK]

Quick Trick: Sidecar containers are separate services in one Compose file [OK]

Common Mistakes:

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Which of the following is the correct way to define a sidecar container in a Docker Compose file?