boot.sh

    mix)
        # Make sure the config is generated first
        generate_config
        # start up the release in the foreground for use by runit
        # or other supervision services

        [ -f "$REL_DIR/$REL_NAME.boot" ] && BOOTFILE="$REL_NAME" || BOOTFILE="start"
        FOREGROUNDOPTIONS="-noshell -noinput +Bd"

        # Setup beam-required vars
        EMU="beam"
        PROGNAME="${0#*/}"

        export EMU
        export PROGNAME

        # Store passed arguments since they will be erased by `set`
        ARGS="$@"

        echo "${@:2}"

        # Build an array of arguments to pass to exec later on
        # Build it here because this command will be used for logging.
        set -- "$BINDIR/erlexec" "$FOREGROUNDOPTIONS" \
            -boot "$REL_DIR/$BOOTFILE" -mode embedded -config "$CONFIG_PATH" \
            -args_file "$VMARGS_PATH" -noshell \
            -s Elixir.Mix.Tasks.Muweb run \         # <---------
            -s erlang halt -extra "${@:2}"          # <---------

        # Dump environment info for logging purposes
        echo "Exec: $@" #-- "${1+$ARGS}"
        echo "Root: $ROOTDIR"

        # Start the VM
        exec "$@" #-- "${1+$ARGS}"                  # <---------
        ;;