Declare env variable which value include space for docker/docker-compose

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Lets see the result running the following compose file:

version: "3"

services:
    service:
        image: alpine
        command: env
        env_file: env.conf

env.conf:

TEST_VAR1=The value
TEST_VAR2="The value2"

docker-compose up Result:

service_1 | PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
service_1  | TEST_VAR2="The value2"
service_1  | TEST_VAR1=The value
service_1  | HOME=/root

Therefore, it is legal to have spaces in the env value.

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