Adapt justfiles for Docker Compose command

[justb4]

This should solve #1149. See also my comment there for the approach. In short through a variable that is substituted. Note that this may not work if an older Docker version is installed without the Python docker-compose script...As both variants will not be present. Maybe add an extra test+warning msg for that case.

dockercompose := `if docker-compose --version &> /dev/null; then echo "docker-compose"; else echo "docker compose"; fi`
.
.
up:
   {{ dockercompose }} up

up-build:
    {{ dockercompose }} up --build
.
.

[sharkAndshark]

Thx @justb4 It works! Now I can run recipes without docker-compose standalone.

[nyurik]

thx!