问docker-没有找到oci运行时可执行文件(在链接容器中)

EN

version: '3'
services:
    tests:
        build:
            context: .
            dockerfile: Dockerfile.tests
        links:
            - web
            - maindb
    web:
        build:
            context: .
            dockerfile: Dockerfile.web
        ports:
            - "8080:8080"
        volumes:
            - .:/code
            - logvolume01:/var/log
        links:
            - maindb
    maindb:
        image: postgres
        environment:
            POSTGRES_PASSWORD: example

volumes:
    logvolume01: {}

$ docker-compose  -p wh  run web
Starting wh_maindb_1 ... done
2017/07/27 22:05:34 [I] http server Running on http://:8080

$ docker-compose  -p wh  run tests
Starting wh_maindb_1 ... done
Starting 6faff07f7671_6faff07f7671_wh_web_1 ... 
Starting 6faff07f7671_6faff07f7671_wh_web_1 ... error

ERROR: for 6faff07f7671_6faff07f7671_wh_web_1  Cannot start service web: oci runtime error: container_linux.go:262: starting container process caused "exec: \"web\": executable file not found in $PATH"

$ cat Dockerfile.web 
FROM ubuntu:xenial
WORKDIR /app
ADD bin/* /app/
CMD ["/app/web"]

$ docker version 
Client:
 Version:      17.06.0-ce
 API version:  1.30
 Go version:   go1.8.3
 Git commit:   02c1d87
 Built:        Fri Jun 23 21:23:31 2017
 OS/Arch:      linux/amd64

Server:
 Version:      17.06.0-ce
 API version:  1.30 (minimum version 1.12)
 Go version:   go1.8.3
 Git commit:   02c1d87
 Built:        Fri Jun 23 21:19:04 2017
 OS/Arch:      linux/amd64
 Experimental: false

$ docker-compose version
docker-compose version 1.14.0, build c7bdf9e
docker-py version: 2.4.2
CPython version: 2.7.12
OpenSSL version: OpenSSL 1.0.2g  1 Mar 2016