TurboScript

TurboScript

Turbo command processor can act as an automated builder by reading instructions from a .me file to create a new image. Turbo Shell can act as an interactive interpreter of TurboScript.

A .me script is a text file containing a set of instructions that the Turbo command processor or the Turbo Shell follows to create a container. In Turbo command processor, at the end of the script, a new image is created from the container and the container is deleted.

The syntax of a TurboScript generally follows the pattern:

instruction <arg 1> <arg 2> ...
instruction <arg 1> <arg 2> ...
instruction <arg 1> <arg 2> ...

The script is read and executed top-to-bottom and is not case-sensitive.

All scripts have an implicit commit at the end of the script. After the last instruction in the script, it executes turbo commit on the container. If a name was not provided to the build command (via the -n or --name flag) then the new image will be created with its ID as its name.

Syntax Rules

  1. TurboScript are line-delimited and must only contain 1 instruction per line. Line continuation is not supported.
  2. All lines must follow the general structure: instruction <args>
  3. Inline comments are not supported. Comments must be applied at the beginning of a line and are applied to the entire line.

Comments

Comments are denoted by the # character.

# This is a comment

Comments cannot be made inline with a command. Comments must be specified at the beginning of a line.

# This is a valid comment

layer nodejs/nodejs  # This is not a valid comment

Conditions

Any TurboScript instruction can have an optional when clause at the end of the line to specify the conditions which must be met before the instruction will be executed. The general form is instruction when expression.

cmd "echo This is Windows7" when host has os:Windows7

These are the currently supported expressions:

  • host has architecture:x86
  • host has architecture:x64
  • host has os:WindowsXP
  • host has os:Windows2003
  • host has os:WindowsVista
  • host has os:Windows2008
  • host has os:Windows7
  • host has os:Windows2008r2
  • host has os:Windows8
  • host has os:Windows2012
  • host has os:Windows8.1
  • host has os:Windows2012r2
  • host has os:Windows10

Note that client OSes are not differentiated from server OSes so "Windows7" is equivalent to "Windows2008r2", etc.

Expressions can be combined with AND, OR, NOT, and parenthesis.

layer clean when (not host has os:windows7 and not host has os:windows8.1)
layer spoonbrew/iis7-base when host has os:windows7
layer spoonbrew/iis8-base when host has os:windows8.1

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