guix system docker-image : missing root file system and 'incompatible bytecode kind'

[edk]

Dear Guix,

At the request of a client, I am trying to create a docker image for a
guix package I wrote.

I pasted my operating-system declaration below. I try to run
guix system docker-image denatting.scm

If I remove the dummy root file system, I get the error:
> /home/edouard/src/denatting/denatting.scm:36:0: error: missing root file 
> system

If I put a dummy root filesystem (I put '/dev/vda1' there arbitrarily,
the field is mandatory and I have no idea what block device is available
under docker, I was under the impression that virtualized operating
system did not neeed a root file system), I can create an image and load
it but when I invoke docker run I get the error message I also
pasted below "In procedure load-thunk-from-memory: incompatible bytecode
kind" and the service does not start.

What I don't understand is that if I use `guix pack` I can get a docker
image with my software installed. However I must then run
docker run denatting:latest denat
to run the server.

My goal here is to create a shepherd service so that the client just has
to run
docker run denatting:latest
without habing to specify a command, and with shepherd monitoring the
server and restarting it when it crashes.

Any help would be appreciated,

Thanks in advance,

Edouard.

-------denatting.scm---8<-----
(define-module (denatting)
  #:use-module (gnu system)
  #:use-module (gnu system file-systems)
  #:use-module (gnu bootloader)
  #:use-module (gnu bootloader grub)
  #:use-module (gnu services)
  #:use-module (gnu services base)
  #:use-module (gnu services shepherd)
  #:use-module (beaver packages scheme-xyz)
  ;#:use-module (oop goops)
  #:use-module (guix gexp)
  ;#:use-module (guix records)
  ;#:use-module (ice-9 match)
  #:export (denatting-service))

(define denatting-service
  (lambda (_)
    (list
     (shepherd-service
      (provision '(denatting))
      (documentation "Denatting web server")
      (respawn? #t)
      (start #~((make-forkexec-constructor
                 (list "denat")
                 #:log-file "/var/log/denatting.log")))
      (stop #~((make-kill-destructor)))))))

(define denatting-service-type
  (service-type
   (name 'denatting)
   (extensions
    (list (service-extension shepherd-root-service-type denatting-service)))
   (default-value #f)))


(operating-system
 (host-name "denatting")
 (timezone "Europe/Paris")
 (bootloader (bootloader-configuration
              (bootloader grub-bootloader)))
 (packages (append (list
                    gerbil-denatting)
                   %base-packages))
;; (file-systems %base-file-systems)
  (file-systems (append (list
                         (file-system
                          (mount-point "/")
                          (device "/dev/vda1")
                          (type "ext4")))
                        %base-file-systems))
 (services (append (list
                    (service denatting-service-type))
                   %base-services)))
----------------Error message I get with the dummy file system---8<----
;;; WARNING: loading compiled file 
/gnu/store/08da6i38fzn9g36gyq443k03f84nk8rk-module-import-compiled/guix/build/utils.go
 failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/gnu/build/activation.go
 failed
:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/gnu/system/accounts.go
 failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/guix/records.go
 failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/gnu/build/accounts.go
 failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/guix/combinators.go
 failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/gnu/build/linux-boot.go
 failed
:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/guix/build/syscalls.go
 failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/gnu/build/linux-modules.go
 fai
led:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/guix/elf.go 
failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/guix/glob.go 
failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/guix/build/union.go
 failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; Failed to autoload call-with-gzip-input-port in (zlib):
;;; missing interface for module (zlib)
;;; Failed to autoload call-with-gzip-input-port in (zlib):
;;; missing interface for module (zlib)
;;; Failed to autoload call-with-gzip-input-port in (zlib):
;;; missing interface for module (zlib)
;;; Failed to autoload call-with-gzip-input-port in (zlib):
;;; missing interface for module (zlib)
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/gnu/build/file-systems.go
 fail
ed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/gnu/system/uuid.go
 failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/gnu/system/file-systems.go
 fai
led:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/guix/diagnostics.go
 failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/guix/colors.go
 failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/guix/memoization.go
 failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/xfrwjx47iwv8pnn6ml22fj6jnm2jmdjm-module-import-compiled/guix/profiling.goPlease
 wait while gathering entropy to generate the key pair;
this may take time...
error in finalization thread: Success
failed to start service 'file-systems'
failed to start service 'user-file-systems'
failed to start service 'root-file-system'
failed to start service 'user-processes'
failed to start service 'host-name'
failed to start service 'user-homes'
failed to start service 'nscd'
failed to start service 'udev'
failed to start service 'guix-daemon'
failed to start service 'urandom-seed'
failed to start service 'syslogd'
failed to start service 'loopback'
failed to start service 'virtual-terminal'
failed to start service 'denatting'
failed to start service 'mcron'
^CBacktrace:
           2 (primitive-load "/gnu/store/n8dw1ybmfj3y15h5ax1ddcx1kmp?")
In shepherd.scm:
   353:22  1 (main . _)
In shepherd/system.scm:
    78:10  0 (_ _)

shepherd/system.scm:78:10: In procedure reboot: Operation not permitted: 
RB_AUTOBOOT
------------------guix describe----------8<----
Génération 3    30 oct. 2020 21:57:15   (actuelle)
  beaverlabs d878892
    URL du dépôt : https://gitlab.com/edouardklein/guix
    branche: beaverlabs
    commit : d8788927c7e8b29702adb971bf1ffbc3235fba22
  guix 94c38d5
    URL du dépôt : https://git.savannah.gnu.org/git/guix.git
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    commit : 94c38d54c9f061ffa0ccfe4be498c8e1b3c2a709