我如何在这里构建Dockerfile ？
我git clone它跑docker build .。然后我得到以下错误：
Sending build context to Docker daemon 3.072kB
Step 1/8 : FROM python:2.7-alpine
---> 0781c116c406
Step 2/8 : MAINTAINER Hugo Picado
---> Using cache
---> 3b9485bbb02b
Step 3/8 : RUN pip install moto && pip install flask
---> Running in 764d3105d57d
Collecting moto
Downloading moto-1.2.0-py2.py3-none-any.whl (514kB)
Collecting cryptography>=2.0.0 (from moto)
Downloading cryptography-2.1.4.tar.gz (441kB)
Collecting backports.tempfile; python_version < "3.3" (from moto)
Downloading backports.tempfile-1.0-py2.py3-none-any.whl
Collecting cookies (from moto)
Downloading cookies-2.2.1-py2.py3-none-any.whl (44kB)
Collecting aws-xray-sdk>=0.93 (from moto)
Downloading aws_xray_sdk-0.95-py2.py3-none-any.whl (52kB)
Collecting python-dateutil<3.0.0,>=2.1 (from moto)
Downloading python_dateutil-2.6.1-py2.py3-none-any.whl (194kB)
Collecting pyaml (from moto)
Downloading pyaml-17.12.1-py2.py3-none-any.whl
Collecting werkzeug (from moto)
Downloading Werkzeug-0.14.1-py2.py3-none-any.whl (322kB)
Collecting boto>=2.36.0 (from moto)
Downloading boto-2.48.0-py2.py3-none-any.whl (1.4MB)
Collecting Jinja2>=2.8 (from moto)
Downloading Jinja2-2.10-py2.py3-none-any.whl (126kB)
Collecting docker>=2.5.1 (from moto)
Downloading docker-2.7.0-py2.py3-none-any.whl (119kB)
Collecting mock (from moto)
Downloading mock-2.0.0-py2.py3-none-any.whl (56kB)
Collecting jsondiff==1.1.1 (from moto)
Downloading jsondiff-1.1.1.tar.gz
Collecting botocore>=1.7.12 (from moto)
Downloading botocore-1.8.34-py2.py3-none-any.whl (4.0MB)
Collecting boto3>=1.2.1 (from moto)
Downloading boto3-1.5.20-py2.py3-none-any.whl (128kB)
Collecting requests>=2.5 (from moto)
Downloading requests-2.18.4-py2.py3-none-any.whl (88kB)
Collecting pytz (from moto)
Downloading pytz-2017.3-py2.py3-none-any.whl (511kB)
Collecting xmltodict (from moto)
Downloading xmltodict-0.11.0-py2.py3-none-any.whl
Collecting six>1.9 (from moto)
Downloading six-1.11.0-py2.py3-none-any.whl
Collecting idna>=2.1 (from cryptography>=2.0.0->moto)
Downloading idna-2.6-py2.py3-none-any.whl (56kB)
Collecting asn1crypto>=0.21.0 (from cryptography>=2.0.0->moto)
Downloading asn1crypto-0.24.0-py2.py3-none-any.whl (101kB)
Collecting cffi>=1.7 (from cryptography>=2.0.0->moto)
Downloading cffi-1.11.4.tar.gz (436kB)
Complete output from command python setup.py egg_info:
unable to execute 'gcc': No such file or directory
unable to execute 'gcc': No such file or directory
No working compiler found, or bogus compiler options passed to
the compiler from Python's standard "distutils" module. See
the error messages above. Likely, the problem is not related
to CFFI but generic to the setup.py of any Python package that
tries to compile C code. (Hints: on OS/X 10.8, for errors about
-mno-fused-madd see http://stackoverflow.com/questions/22313407/
Otherwise, see https://wiki.python.org/moin/CompLangPython or
the IRC channel #python on irc.freenode.net.)
----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-EPS61X/cffi/
The command '/bin/sh -c pip install moto && pip install flask' returned a non-zero code: 1
看来我必须在Dockerfile内安装更多依赖项才能解决unable to execute 'gcc': No such file or directory错误。
但是，如果是这样，如何在dockerhub上构建细节成功？
我是否必须将任何文件放入其中/opt/moto才能成功构建？
您需要安装gcc和其他附加的lib软件包来安装moto：
RUN apk add --no-cache --update gcc musl-dev libffi-dev openssl-dev
最终Dockerfile是：
FROM python:2.7-alpine
MAINTAINER Hugo Picado
RUN apk add --no-cache --update gcc musl-dev libffi-dev openssl-dev
RUN pip install moto && pip install flask
VOLUME /opt/moto
ADD start.sh .
RUN chmod +x start.sh
EXPOSE 5000
ENTRYPOINT ./start.sh
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