How do I overwrite the values in the .env file within a startup script when using the Docker Compose implementation option?

Based on the information provided in the extracts, there isn't a direct example of overwriting the values in the

.env

file within a startup script when using Docker Compose. However, you can set environment variables in Docker Compose in a few ways: 1. You can set environment variables directly in the

docker-compose.yaml

file. For example, in the

docker-compose.debug.yaml

file, the

JAVA_TOOL_OPTIONS

environment variable is set with the value of the

DEBUG_SERVER_JAVA_OPTIONS

variable ([source](https://docs.airbyte.com/connector-development/debugging-docker)).

yaml server:    environment:    - JAVA_TOOL_OPTIONS=${DEBUG_SERVER_JAVA_OPTIONS}

2. You can also set environment variables in your shell before running the

docker compose

command. For example, you can

export

the variable in your environment or prepend the variable to the command ([source](https://docs.airbyte.com/connector-development/debugging-docker)).

bash DEBUG_SERVER_JAVA_OPTIONS="-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=*:5005" VERSION="dev" docker compose -f docker-compose.yaml -f docker-compose.debug.yaml up

3. You can use an

.env

file to define your environment variables. Docker Compose automatically looks for this file in the project directory ([source](https://docs.airbyte.com/operator-guides/collecting-metrics)).

bash PUBLISH_METRICS=true   METRIC_CLIENT=datadog   DD_AGENT_HOST=dd-agent   DD_DOGSTATSD_PORT=8125

To overwrite the values in the

.env

file within a startup script, you could write a script that modifies the

.env

file before running

docker compose up

. However, the specifics of how to do this would depend on the scripting language you're using and the exact changes you need to make to the

.env

file.