How do I use environment variables in Docker?
An example of an AI chatbot conversation about using environment variables in Docker.
How do I use environment variables in Docker?
You can use environment variables in Docker by using the -e flag in the docker run command or by defining them in a Dockerfile.
Can you give me an example of setting an environment variable in a Dockerfile?
Sure! You can set an environment variable in a Dockerfile using the ENV instruction like this: ENV MY_VAR=value.
How can I pass environment variables from a .env file?
You can use the --env-file option with docker run to pass variables from a .env file. For example: docker run --env-file .env my_image.
What if I want to override an environment variable?
You can override an environment variable by specifying it again with the -e flag when you run the container, like this: docker run -e MY_VAR=new_value my_image.
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