I don't know if this shit is expected (normal behaviour or not) but this is annoying

bash :

$ toto=tata
$ echo $toto
tata

$ toto='tata'
$ echo $toto
tata

$ toto="tata"
$ echo $toto
tata

avec docker run -e

$ docker run -e toto=tata -it debian:jessie bash
root@5de64152ed05:/# echo $toto
tata

$ docker run -e toto='tata' -it debian:jessie bash
root@99a6b62f595c:/# echo $toto
tata

$ docker run -e toto="tata" -it debian:jessie bash
root@ab7581c30734:/# echo $toto
tata

avec docker run --env-file:

$ cat env.file
toto="tata"
$ docker run -it --env-file env.file debian:jessie bash
root@805480de4a52:/# echo $toto
"tata"

$ cat env.file
toto='tata'
$ docker run -it --env-file env.file debian:jessie bash
root@004b88cc448d:/# echo $toto
'tata'

$ cat env.file
toto=tata
$ docker run -it --env-file env.file debian:jessie bash
root@2ca9908d1cdf:/# echo $toto
tata

avec docker compose:

$ cat docker-compose.yml
version: '2'
services:
foo:
image: debian:jessie
container_name: foo
environment:

• toto1=tata
• toto2="tata"
• toto3='tata'
  command: tail -f /var/log/dmesg

docker-compose up -d
docker exec -it foo bash

root@71a9a886cc24:/# echo $toto1
tata
root@71a9a886cc24:/# echo $toto2
"tata"
root@71a9a886cc24:/# echo $toto3
'tata'