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docker: 'build-docker-image' accepts an optional #:entry-point.

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* guix/docker.scm (config): Add #:entry-point and honor it.
(build-docker-image): Likewise.
This commit is contained in:
Ludovic Courtès 2019-05-10 22:32:10 +02:00
parent 9fcfe30d28
commit 7ff4fde257
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GPG Key ID: 090B11993D9AEBB5
1 changed files with 11 additions and 4 deletions
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15
guix/docker.scm
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@ -1,6 +1,6 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2017, 2018 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2018 Chris Marusich <cmmarusich@gmail.com>
;;;
;;; This file is part of GNU Guix.
@ -73,7 +73,7 @@
`((,(generate-tag path) . ((latest . ,id)))))
;; See https://github.com/opencontainers/image-spec/blob/master/config.md
(define (config layer time arch)
(define* (config layer time arch #:key entry-point)
"Generate a minimal image configuration for the given LAYER file."
;; "architecture" must be values matching "platform.arch" in the
;; runtime-spec at
@ -81,7 +81,9 @@
`((architecture . ,arch)
(comment . "Generated by GNU Guix")
(created . ,time)
(config . #nil)
(config . ,(if entry-point
`((entrypoint . ,entry-point))
#nil))
(container_config . #nil)
(os . "linux")
(rootfs . ((type . "layers")
@ -110,6 +112,7 @@ return \"a\"."
(transformations '())
(system (utsname:machine (uname)))
database
entry-point
compressor
(creation-time (current-time time-utc)))
"Write to IMAGE a Docker image archive containing the given PATHS. PREFIX
@ -118,6 +121,9 @@ must be a store path that is a prefix of any store paths in PATHS.
When DATABASE is true, copy it to /var/guix/db in the image and create
/var/guix/gcroots and friends.
When ENTRY-POINT is true, it must be a list of strings; it is stored as the
entry point in the Docker image JSON structure.
SYMLINKS must be a list of (SOURCE -> TARGET) tuples describing symlinks to be
created in the image, where each TARGET is relative to PREFIX.
TRANSFORMATIONS must be a list of (OLD -> NEW) tuples describing how to
@ -227,7 +233,8 @@ SRFI-19 time-utc object, as the creation time in metadata."
(with-output-to-file "config.json"
(lambda ()
(scm->json (config (string-append id "/layer.tar")
time arch))))
time arch
#:entry-point entry-point))))
(with-output-to-file "manifest.json"
(lambda ()
(scm->json (manifest prefix id))))