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fix pgdata volume mount command to expose port 5432 #38

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fix pgdata volume mount command to expose port 5432 #38

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2 changes: 1 addition & 1 deletion 04-using-3rd-party-containers/README.md
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Expand Up @@ -198,7 +198,7 @@ cat /var/lib/docker/volumes/my-volume/_data/hello.txt # Woohoo! we found our dat
This approach can then be used to mount a volume at the known path where a program persists its data:
```bash
# Create a container from the postgres container image and mount its known storage path into a volume named pgdata
docker run -it --rm -v pgdata:/var/lib/postgresql/data -e POSTGRES_PASSWORD=foobarbaz postgres:15.1-alpine
docker run -it --rm -p 5432:5432 -v pgdata:/var/lib/postgresql/data -e POSTGRES_PASSWORD=foobarbaz postgres:15.1-alpine
```

#### ii. Bind Mounts
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