| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/moby/buildkit/frontend/dockerfile/parser | The parser package implements a parser that transforms a raw byte-stream into a low-level Abstract Syntax Tree. |
| github.com/pkg/errors | Package errors provides simple error handling primitives. |
| maps | Package maps defines various functions useful with maps of any type. |
| strconv | Package strconv implements conversions to and from string representations of basic data types. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |