Script Arguments

Commandline arguments for the zwift.sh script are forwarded to the container tool and the container entrypoint.

  • Arguments that appear before -- are forwarded to the container tool. These arguments behave the same as if they were set in the CONTAINER_EXTRA_ARGS environment variable.
  • Arguments that appear after -- are forwarded to the container entrypoint.
foo@bar:~$ zwift container tool args -- container entrypoint args

Examples 

# the following two commands do exactly the same
zwift --cpus=1.5
CONTAINER_EXTRA_ARGS="--cpus=1.5" zwift

# update is an argument to the entrypoint script that runs inside the container
zwift -- update

# limit the number of cpu cores and pass update as argument to the entrypoint script
zwift --cpus=1.5 -- update

# set an environment variable and print it inside the container
INTERACTIVE=1 zwift --env HELLO="Hello, world!" -- -c 'echo "$HELLO"'

# 1. INTERACTIVE=1 enables interactive mode (-it) and sets the entrypoint to /bin/bash
# 2. --env HELLO="Hello, world!" passes the environment variable HELLO to the container
# 3. -c 'echo "$HELLO"' is passed to the /bin/bash entrypoint in the container, it executes
#    the echo "$HELLO" command inside the container, which will print "Hello, world!"