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Rely on DOCKER_HOST - if it exists - to mount the Docker socket at the entrypoint. #54

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Rely on DOCKER_HOST - if it exists - to mount the Docker socket at the entrypoint. #54

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8 changes: 7 additions & 1 deletion entrypoint.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -8,4 +8,10 @@ if [ ! -z $INPUT_DOCKER_NETWORK ];
then INPUT_OPTIONS="$INPUT_OPTIONS --network $INPUT_DOCKER_NETWORK"
fi

exec docker run -v "/var/run/docker.sock":"/var/run/docker.sock" $INPUT_OPTIONS --entrypoint=$INPUT_SHELL $INPUT_IMAGE -c "${INPUT_RUN//$'\n'/;}"
# NOTE: Docker sock may not always be under /var/run/docker.sock
# Rely on DOCKER_HOST if it exists.
# Ref: https://docs.docker.com/engine/reference/commandline/cli/
DOCKER_HOST="${DOCKER_HOST:-unix:///var/run/docker.sock}"
DOCKER_HOST="${DOCKER_HOST#unix://}"

exec docker run -v "${DOCKER_HOST}":"${DOCKER_HOST}" $INPUT_OPTIONS --entrypoint=$INPUT_SHELL $INPUT_IMAGE -c "${INPUT_RUN//$'\n'/;}"