flask cli throws "[errno 2] no such file" when deploying with docker

When you execute a script, the kernel looks for the interpreter specified in the shebang (#!). The location of the interpreter is extracted, and then the interpreter (e.g. python3) is launched, executing the script itself. If the interpreter binary is not found, execution fails with a No such file or directory (ENOENT) error (as per man 2 execve):

ERRORS
   <
   ... >
   ENOENT The file filename or a script or ELF interpreter does not exist,
   or a shared library needed
for the file or interpreter cannot be found.

You have specified #!/usr/bin/python3 in your shebang, but in the base image you use (python:3.7.2-alpine) the python3 binary is at different location:

$ docker run - it python: 3.7 .2 - alpine sh /
   # which python3 /
   usr / local / bin / python3

To avoid such situations, shebangs in scripts usually refer not to the interpreter itself (#!/usr/bin/python3), but to /usr/bin/env binary, which finds and executes the interpreter:

#!/usr/bin/env python3

Suggestion : 2

So i would expect that this would launch the anycodings_docker application and make it available on port anycodings_docker 6001, but instead it gives me the following anycodings_docker error:,Finally, the correct version of your anycodings_flask script would be as follows:,I'm following the micro services course on anycodings_docker testdriven.io. In this course I need to anycodings_docker deploy a Flask application with Docker. To anycodings_docker run the application I use Flask-cli, and it anycodings_docker gives me an error on start up:,And my manage.py file which will launch the anycodings_docker application:

I'm following the micro services course on anycodings_docker testdriven.io. In this course I need to anycodings_docker deploy a Flask application with Docker. To anycodings_docker run the application I use Flask-cli, and it anycodings_docker gives me an error on start up:

No such file or directory: '/usr/src/app/manage.py': '/usr/src/app/manage.py'

This is how my compose file looks like:

version: '3.7'

services:

   users:
   build:
   context: . / services / users
dockerfile: Dockerfile - dev
volumes:
   -'./services/users:/usr/src/app'
ports:
   -6001: 6000
environment:
   -FLASK_APP = project / __init__.py -
   FLASK_ENV = development -
   COMPOSE_CONVERT_WINDOWS_PATHS = 1

My docker file:

# base image
FROM python: 3.7 .2 - alpine

# set working directory
WORKDIR / usr / src / app

# add and install requirements
COPY. / requirements.txt / usr / src / app / requirements.txt
RUN pip install - r requirements.txt

# add app
COPY. / usr / src / app

# i tried to give it the right rights..but it didn 't help
RUN chmod + x / usr / src / app / manage.py

# run server
CMD python manage.py run - h 0.0 .0 .0

When you execute a script, the kernel anycodings_flask looks for the interpreter specified in anycodings_flask the shebang (#!). The location of the anycodings_flask interpreter is extracted, and then the anycodings_flask interpreter (e.g. python3) is launched, anycodings_flask executing the script itself. If the anycodings_flask interpreter binary is not found, anycodings_flask execution fails with a No such file or anycodings_flask directory (ENOENT) error (as per man 2 anycodings_flask execve):

ERRORS
   <
   ... >
   ENOENT The file filename or a script or ELF interpreter does not exist,
   or a shared library needed
for the file or interpreter cannot be found.

You have specified #!/usr/bin/python3 in anycodings_flask your shebang, but in the base image you anycodings_flask use (python:3.7.2-alpine) the python3 anycodings_flask binary is at different location:

$ docker run - it python: 3.7 .2 - alpine sh /
   # which python3 /
   usr / local / bin / python3

To avoid such situations, shebangs in anycodings_flask scripts usually refer not to the anycodings_flask interpreter itself (#!/usr/bin/python3), anycodings_flask but to /usr/bin/env binary, which finds anycodings_flask and executes the interpreter:

#!/usr/bin/env python3

Suggestion : 3

I also met with the same problem ...READ MORE,I am trying to run one python script to fetch dynamic IP. But it is showing me the below error., Hi@akhtar, I think there is a problem with ...READ MORE,It seems your python script is not able to find python in your system. You may have python3 installed in your system. But it is finding /usr/bin/python folder. So you can create a symlink to it.

I am trying to run one python script to fetch dynamic IP. But it is showing me the below error.

/usr/bin / env: ‘python’: No such file or directory

It seems your python script is not able to find python in your system. You may have python3 installed in your system. But it is finding /usr/bin/python folder. So you can create a symlink to it.

$ sudo ln - s / usr / bin / python3 / usr / bin / python

Suggestion : 4

October 11, 2021 collectstatic, django, python No comments ,BASE_DIR is correct, checked it. Directory BASE_DIR/static/ exists and all my static files are there., [FIXED] in VS Code ImportError: cannot import name 'Mapping' from 'collections' Issue I am trying to connect to Postgress and create a folder test.db via Flask. When I ru... ,I've performed a lot of collectstatic-calls and everything worked fine, but today have this issue.

In django 1.7 collectstatic throws an exception for me:

OSError: [Errno 2] No such file or directory: '/static'

settings.py

BASE_DIR = os.path.dirname(os.path.realpath(__file__))
INSTALLED_APPS = (
   'django.contrib.admin',
   'django.contrib.auth',
   'django.contrib.contenttypes',
   'django.contrib.sessions',
   'django.contrib.messages',
   'django.contrib.staticfiles',

   'fxblog',
   'rest_framework',
)

STATIC_URL = '/static/'
STATIC_ROOT = os.path.join(BASE_DIR, STATIC_URL.strip("/"))

STATICFILES_DIRS = (
   '/static/',
   '/upload/',
)

Traceback:

Traceback (most recent call last):
File "../manage.py", line 10, in <module>
   execute_from_command_line(sys.argv)
   File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 399, in execute_from_command_line
   utility.execute()
   File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 392, in execute
   self.fetch_command(subcommand).run_from_argv(self.argv)
   File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 242, in run_from_argv
   self.execute(*args, **options.__dict__)
   File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 285, in execute
   output = self.handle(*args, **options)
   File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 415, in handle
   return self.handle_noargs(**options)
   File "/usr/local/lib/python2.7/dist-packages/django/contrib/staticfiles/management/commands/collectstatic.py", line 173, in handle_noargs
   collected = self.collect()
   File "/usr/local/lib/python2.7/dist-packages/django/contrib/staticfiles/management/commands/collectstatic.py", line 103, in collect
   for path, storage in finder.list(self.ignore_patterns):
   File "/usr/local/lib/python2.7/dist-packages/django/contrib/staticfiles/finders.py", line 106, in list
   for path in utils.get_files(storage, ignore_patterns):
   File "/usr/local/lib/python2.7/dist-packages/django/contrib/staticfiles/utils.py", line 25, in get_files
   directories, files = storage.listdir(location)
   File "/usr/local/lib/python2.7/dist-packages/django/core/files/storage.py", line 249, in listdir
   for entry in os.listdir(path):
   OSError: [Errno 2] No such file or directory: '/static'

Also it is good to set STATIC_ROOT to something like

STATIC_ROOT = normpath(join(BASE_DIR, 'assets'))

and STATIC_URL

STATIC_URL = '/static/'