[Docker] pass correct envvar as instance name

run-docker.sh

@@ -96,6 +96,6 @@ docker run -t --rm --name $DOCKER_INST_NAME -it \
 -v $BUILD_LOCAL:$BUILD_LOCAL \
 -v $VIVADO_PATH:$VIVADO_PATH \
 -e VIVADO_PATH=$VIVADO_PATH \
--e FINN_INST_NAME=$DOCKER_TAG \
+-e FINN_INST_NAME=$DOCKER_INST_NAME \
 -p $JUPYTER_PORT:$JUPYTER_PORT \
 $DOCKER_TAG bash -c "$DOCKER_CMD"