从v2.5版本开始，考虑到各个工具命令的解耦性，gf docker工具命令默认不再执行二进制构建编译，而是推荐大家通过Makefile构建脚本自行组织使用gf build, gf gen enums, gf docker等命令结合的方式来组合使用命令（工程项目中提供了对应的make build, make enums, make docker命令），组合使用更加灵活且易维护。

$ gf docker -h
USAGE
    gf docker [MAIN] [OPTION]

ARGUMENT
    MAIN    main file path for "gf build", it's "main.go" in default. empty string for no binary build

OPTION
    -f, --file           file path of the Dockerfile. it's "manifest/docker/Dockerfile" in default
    -s, --shell          path of the shell file which is executed before docker build
    -b, --build          binary build options before docker image build, it's "-a amd64 -s linux" in default
    -tn, --tagName       tag name for this docker, pattern like "image:tag". this option is required with TagPrefixes
    -tp, --tagPrefixes   tag prefixes for this docker, which are used for docker push. this option is required with
                         TagName
    -p, --push           auto push the docker image to docker registry if "-t" option passed
    -e, --extra          extra build options passed to "docker image"
    -h, --help           more information about this command

EXAMPLE
    gf docker
    gf docker -t hub.docker.com/john/image:tag
    gf docker -p -t hub.docker.com/john/image:tag
    gf docker main.go
    gf docker main.go -t hub.docker.com/john/image:tag
    gf docker main.go -t hub.docker.com/john/image:tag
    gf docker main.go -p -t hub.docker.com/john/image:tag

DESCRIPTION
    The "docker" command builds the GF project to a docker images.
    It runs "gf build" firstly to compile the project to binary file.
    It then runs "docker build" command automatically to generate the docker image.
    You should have docker installed, and there must be a Dockerfile in the root of the project.

$ gf docker main.go -p -tn loads/gf-demos:test          
2020-12-31 00:47:28.207 start building...
2020-12-31 00:47:28.207 go build -o ./bin/linux_amd64/main main.go
2020-12-31 00:47:35.894 done!
Sending build context to Docker daemon  37.63MB
Step 1/10 : FROM loads/alpine:3.8
 ---> f9fb622e6db2
Step 2/10 : LABEL maintainer="john@goframe.org"
 ---> Using cache
 ---> da238418d031
Step 3/10 : ENV WORKDIR /var/www/gf-demos
 ---> Using cache
 ---> 3e7129c087c9
Step 4/10 : ADD ./bin/linux_amd64/main   $WORKDIR/main
 ---> 3661a9dea494
Step 5/10 : RUN chmod +x $WORKDIR/main
 ---> Running in 1d49d5d91080
Removing intermediate container 1d49d5d91080
 ---> a03ee04e3380
Step 6/10 : ADD public   $WORKDIR/public
 ---> 63dd06d0e1a3
Step 7/10 : ADD config   $WORKDIR/config
 ---> fa7a57eba577
Step 8/10 : ADD template $WORKDIR/template
 ---> 7075609b0447
Step 9/10 : WORKDIR $WORKDIR
 ---> Running in a34ef38e1031
Removing intermediate container a34ef38e1031
 ---> 580077998eaf
Step 10/10 : CMD ./main
 ---> Running in ed286b518ad9
Removing intermediate container ed286b518ad9
 ---> fbbc05842901
Successfully built fbbc05842901
Successfully tagged loads/gf-demos:test
The push refers to repository [docker.io/loads/gf-demos]
b4025b95a79f: Preparing 
9e0369a57507: Preparing 
46c68dcc8e12: Preparing 
59adbc083ee5: Preparing 
10e0b999ba57: Preparing 
8e850d7b086e: Waiting 
d5e057db20a2: Waiting 
92e898fd7f84: Waiting 
d9ff549177a9: Waiting 
...

gfcli:
  docker:
    build: "-a amd64 -s linux -p temp -ew"
    tagPrefixes:
    - ccr.ccs.tencentyun.com/cdb.khaos.eros