Compose: Support for bash's special parameters

[bugchecker]

I failed when I'm trying transfer entrypoint with special parameters from Dockerfile to docker-compose.yml.

Before:

$ cat ./parsey-universal/Dockerfile
FROM andersrye/parsey-universal-server
ENTRYPOINT ["sh", \
    "-c", \
    "set -ux && sed -ie '/print(\"got something/d' /opt/parsefaceserver/server.py && \"$@\"", \
    "sh"]
$ cat docker-compose.yml
version: '2'
services:
  parsey-universal:
    build: ./parsey-universal
    command: python /opt/parsefaceserver/server.py
    environment:
      PARSEY_MODELS: English,Russian-SynTagRus
$ docker-compose up -d parsey-universal
Creating work_parsey-universal_1 ... 
Creating work_parsey-universal_1 ... done
$ docker-compose ps
         Name                        Command               State   Ports
------------------------------------------------------------------------
work_parsey-universal_1   sh -c set -ux && sed -ie ' ...   Up
$ docker-compose exec parsey-universal ps xf
  PID TTY      STAT   TIME COMMAND
  147 ?        Rs+    0:00 ps xf
    1 ?        Ss     0:00 sh -c set -ux && sed -ie '/print("got something/d' /o
    8 ?        Sl     0:00 python /opt/parsefaceserver/server.py
   11 ?        S      0:00  \_ /usr/bin/python bazel-bin/syntaxnet/parser_eval -
   21 ?        Sl     0:03  |   \_ /usr/bin/python /opt/tensorflow/models/syntax
   12 ?        S      0:00  \_ /usr/bin/python bazel-bin/syntaxnet/parser_eval -
   20 ?        Sl     0:03  |   \_ /usr/bin/python /opt/tensorflow/models/syntax
   13 ?        S      0:00  \_ /usr/bin/python bazel-bin/syntaxnet/parser_eval -
   17 ?        Sl     0:01  |   \_ /usr/bin/python /opt/tensorflow/models/syntax
   14 ?        S      0:00  \_ /usr/bin/python bazel-bin/syntaxnet/parser_eval -
   22 ?        Sl     0:02  |   \_ /usr/bin/python /opt/tensorflow/models/syntax
   15 ?        S      0:00  \_ /usr/bin/python bazel-bin/syntaxnet/parser_eval -
   25 ?        Sl     0:04  |   \_ /usr/bin/python /opt/tensorflow/models/syntax
   16 ?        S      0:00  \_ /usr/bin/python bazel-bin/syntaxnet/parser_eval -
   26 ?        Sl     0:03  |   \_ /usr/bin/python /opt/tensorflow/models/syntax
   18 ?        S      0:00  \_ python /opt/parsefaceserver/server.py
$ docker-compose stop parsey-universal && docker-compose rm -f parsey-universal
Stopping work_parsey-universal_1 ... done
Going to remove work_parsey-universal_1
Removing work_parsey-universal_1 ... done

After:

$ cat docker-compose.yml
version: '2'
services:
  parsey-universal:
    image: andersrye/parsey-universal-server
    entrypoint:
      - sh
      - -c
      - set -ux && sed -ie '/print("got something/d' /opt/parsefaceserver/server.py && "$@"
      - sh
    command: python /opt/parsefaceserver/server.py
    environment:
      PARSEY_MODELS: English,Russian-SynTagRus
$ docker-compose up -d parsey-universal
ERROR: Invalid interpolation format for "entrypoint" option in service "parsey-universal": "set -ux && sed -ie '/print("got something/d' /opt/parsefaceserver/server.py && "$@""
$ docker-compose ps
ERROR: Invalid interpolation format for "entrypoint" option in service "parsey-universal": "set -ux && sed -ie '/print("got something/d' /opt/parsefaceserver/server.py && "$@""

$ docker version
Client:
 Version:      1.12.6
 API version:  1.24
 Go version:   go1.6.4
 Git commit:   78d1802
 Built:        Tue Jan 10 20:38:45 2017
 OS/Arch:      linux/amd64

Server:
 Version:      1.12.6
 API version:  1.24
 Go version:   go1.6.4
 Git commit:   78d1802
 Built:        Tue Jan 10 20:38:45 2017
 OS/Arch:      linux/amd64
$ docker-compose version
docker-compose version 1.14.0, build c7bdf9e
docker-py version: 2.4.2
CPython version: 3.5.2
OpenSSL version: OpenSSL 1.0.2g  1 Mar 2016
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.2 LTS
Release:    16.04
Codename:   xenial

[shin-]

You need to escape that dollar sign lest it be considered a candidate for variable substitution

In your case:

version: '2'
services:
  parsey-universal:
    image: andersrye/parsey-universal-server
    entrypoint:
      - sh
      - -c
      - set -ux && sed -ie '/print("got something/d' /opt/parsefaceserver/server.py && "$$@"
      - sh
    command: python /opt/parsefaceserver/server.py
    environment:
      PARSEY_MODELS: English,Russian-SynTagRus

[bugchecker]

@shin- It works. Thanks!