Docker容器未运行报错排查：detached模式启动仍失败

Alright, let's break down why you're hitting that Error from daemon: container is not running message and fix it step by step.

Why the Container Isn't Running #

• The root issue is your initial docker run command is incomplete. When you ran sh "docker run -d --name mongocontainer19", you didn't specify which image to use (like the official mongo image). Docker has no clue what to spin up here—either the container fails to create entirely, or it creates and immediately exits because there's no persistent process to keep it alive.
• You can confirm this by running docker ps -a; you'll see mongocontainer19 listed with a status of Exited.

Why -it and Sleep Didn't Help #

These flags only work if the container is actually running. Since the core problem (missing image) wasn't fixed, adding interactive mode or sleep commands won't change anything—the container still can't stay up.

Step-by-Step Fix #

1. Clean up the broken container (if it was created):

   docker rm mongocontainer19
   

2. Start a valid MongoDB container (specify the official mongo image):

   docker run -d --name mongocontainer19 mongo
   

   Docker will automatically pull the mongo image if you don't have it locally, and the MongoDB daemon will run in the background to keep the container alive.

3. Verify the container is running:

   docker ps
   

   You should see mongocontainer19 with a status of Up X minutes/hours.

4. Run mongodump successfully:
   Now you can execute your backup command with docker exec:

   docker exec mongocontainer19 mongodump --out /dump
   

   If you want to save the backup to your local machine, mount a volume when starting the container:

   docker run -d --name mongocontainer19 -v /your/local/backup/path:/dump mongo
   docker exec mongocontainer19 mongodump --out /dump
   

Bonus Troubleshooting Tip #

If you ever run into container startup issues again, check the logs to see exactly what went wrong:

docker logs mongocontainer19

This will show you error messages from the container's startup process to help you debug faster.

内容的提问来源于stack exchange，提问作者configureMe