I have the following Dockerfile I am trying to use to build an image :
FROM python:3.8-alpine
USER root
WORKDIR /dump_generator_api
COPY requirements.txt ./
RUN python3 -m pip install --upgrade pip
RUN pip3 install -r requirements.txt
RUN apk add postgresql
ADD . /dump_generator_api
EXPOSE 5000
CMD ["python", "/dump_generator_api/app.py"]
Here are the requirements.txt:
Flask==2.0.1
paramiko==3.0.0
When I try to build the image I have the following error. I think this from paramiko installation.
#0 43.49 Failed to build cffi
#0 43.69 Installing collected packages: pycparser, MarkupSafe, itsdangerous, colorama, click, bcrypt, Werkzeug, Jinja2, cffi, PyNaCl, Flask, cryptography, paramiko, flask-healthz, pysftp
#0 44.54 Running setup.py install for cffi: started
#0 44.93 Running setup.py install for cffi: finished with status 'error'
#0 44.94 error: subprocess-exited-with-error
#0 44.94
#0 44.94 × Running setup.py install for cffi did not run successfully.
#0 44.94 │ exit code: 1
#0 44.94 ╰─> [48 lines of output]
#0 44.94 unable to execute 'gcc': No such file or directory
#0 44.94 unable to execute 'gcc': No such file or directory
#0 44.94
#0 44.94 No working compiler found, or bogus compiler options passed to
#0 44.94 the compiler from Python's standard "distutils" module. See
#0 44.94 the error messages above. Likely, the problem is not related
#0 44.94 to CFFI but generic to the setup.py of any Python package that
#0 44.94 tries to compile C code. (Hints: on OS/X 10.8, for errors about
#0 44.94 -mno-fused-madd see http://stackoverflow.com/questions/22313407/
#0 44.94 Otherwise, see https://wiki.python.org/moin/CompLangPython or
#0 44.94 the IRC channel #python on irc.libera.chat.)
#0 44.94
#0 44.94 Trying to continue anyway. If you are trying to install CFFI from
#0 44.94 a build done in a different context, you can ignore this warning.
#0 44.94
#0 44.94 running install
#0 44.94 running build
#0 44.94 running build_py
#0 44.94 creating build
#0 44.94 creating build/lib.linux-x86_64-3.8
#0 44.94 creating build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/backend_ctypes.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/verifier.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/cffi_opcode.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/lock.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/pkgconfig.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/error.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/setuptools_ext.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/api.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/model.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/cparser.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/vengine_gen.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/vengine_cpy.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/ffiplatform.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/recompiler.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/__init__.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/commontypes.py -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/_cffi_include.h -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/parse_c_type.h -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/_embedding.h -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 copying cffi/_cffi_errors.h -> build/lib.linux-x86_64-3.8/cffi
#0 44.94 running build_ext
#0 44.94 building '_cffi_backend' extension
#0 44.94 creating build/temp.linux-x86_64-3.8
#0 44.94 creating build/temp.linux-x86_64-3.8/c
#0 44.94 gcc -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -DFFI_BUILDING=1 -I/usr/include/ffi -I/usr/include/libffi -I/usr/local/include/python3.8 -c c/_cffi_backend.c -o build/temp.linux-x86_64-3.8/c/_cffi_backend.o
#0 44.94 unable to execute 'gcc': No such file or directory
#0 44.94 error: command 'gcc' failed with exit status 1
#0 44.94 [end of output]
#0 44.94
#0 44.94 note: This error originates from a subprocess, and is likely not a problem with pip.
#0 44.95 error: legacy-install-failure
#0 44.95
#0 44.95 × Encountered error while trying to install package.
#0 44.95 ╰─> cffi
#0 44.95
#0 44.95 note: This is an issue with the package mentioned above, not pip.
#0 44.95 hint: See above for output from the failure.
I guess I have to include something else in my Dockerfile but I don't find. How to modify my Dockerfile to succeed in building my image ? I think the problem is from gcc.
You could either:
gcc using apk (taken from this answer):# Dockerfile
# ...
RUN apk add build-base
# Use pip as desired
cffi package:# Dockerfile
# ...
RUN pip3 install -r requirements.txt --only-binary=:all:
(You can also try using --prefer-binary instead.)