Add missing env in install.sh
Add missing env in install.sh

Fix https://github.com/wallabag/wallabag/issues/2345
X-dark/wallabag,shtrom/wallabag,wallabag/wallabag,egilli/wallabag,wallabag/wallabag,pmichelazzo/wallabag,wallabag/wallabag,X-dark/wallabag,egilli/wallabag,X-dark/wallabag,pmichelazzo/wallabag,shtrom/wallabag,X-dark/wallabag,shtrom/wallabag,egilli/wallabag,shtrom/wallabag,pmichelazzo/wallabag,egilli/wallabag,egilli/wallabag,shtrom/wallabag,X-dark/wallabag,pmichelazzo/wallabag,pmichelazzo/wallabag