Compose: Docker Desktop for Windows Stable 2.2.0.0 - docker-compose exec Unicode errors

[gurutech-thomasr]

• [x] I have tried with the latest version of my channel (Stable or Edge)
• [ ] I have uploaded Diagnostics
• Diagnostics ID:

Expected behavior

docker-compose.exe behaves as it did in Docker Desktop for Windows 2.1.0.5.

Actual behavior

If terminal code page is UTF-8, docker-compose exec fails with LookupError: unknown encoding: cp65001
If .env file contains any entries, docker-compose exec fails with TypeError: environment can only contain strings

Information

• Windows Version: Windows 10 Pro, build 18363.592
• Docker Desktop Version: 2.2.0.0
• Are you running inside a virtualized Windows e.g. on a cloud server or on a mac VM: No

The bundled docker-compose.exe appears to have been compiled using Python 2.7 and an older version of python-dotenv.

The issue can be worked around by installing docker-compose via pip and Python 3

Steps to reproduce the behavior

1. Add docker-compose.yml:

   version: "3"
   services:
     test:
       image: ubuntu
       command: tail -f /dev/null
   

2. Add .env:

   A=
   

3. In powershell, run:

   $OutputEncoding = `
     [Console]::OutputEncoding = `
     [Console]::InputEncoding = [Text.Encoding]::UTF8
   chcp.com 65001
   docker-compose down
   docker-compose up -d test
   docker-compose exec test echo 1
   

4. Observe unexpected error:

   Traceback (most recent call last):
     File "logging\__init__.py", line 879, in emit
     File "site-packages\colorama\ansitowin32.py", line 41, in write
     File "site-packages\colorama\ansitowin32.py", line 162, in write
     File "site-packages\colorama\ansitowin32.py", line 187, in write_and_convert
     File "site-packages\colorama\ansitowin32.py", line 195, in write_plain_text
   LookupError: unknown encoding: cp65001
   Logged from file main.py, line 78
   

5. Switch codepage to Windows 1252 and try again:

   $OutputEncoding = `
     [Console]::OutputEncoding = `
     [Console]::InputEncoding = [Text.Encoding]::GetEncoding(1252)
   chcp 1252
   docker-compose exec test echo 1
   

6. Observe error:

   Traceback (most recent call last):
     File "docker-compose", line 6, in <module>
     File "compose\cli\main.py", line 72, in main
     File "compose\cli\main.py", line 128, in perform_command
     File "compose\cli\main.py", line 491, in exec_command
     File "compose\cli\main.py", line 1469, in call_docker
     File "subprocess.py", line 172, in call
     File "subprocess.py", line 394, in __init__
     File "subprocess.py", line 644, in _execute_child
   TypeError: environment can only contain strings
   [8940] Failed to execute script docker-compose
   

7. Remove .env and try again:

   rm .env
   docker-compose down
   docker-compose up -d test
   docker-compose exec test echo 1
   

8. Observe expected output: 1

[djs55]

@gurutech-thomasr thanks for the report and the detailed repro instructions. It fails as you describe on my local machine too.

[akulyk]

docker-compose.exe --version (WSL Windows 10)
Traceback (most recent call last):
File "docker-compose", line 6, in
File "compose\cli\main.py", line 71, in main
File "compose\cli\main.py", line 103, in dispatch
File "compose\cli\docopt_command.py", line 25, in parse
File "compose\cli\docopt_command.py", line 12, in docopt_full_help
File "site-packages\docopt.py", line 575, in docopt
File "site-packages\docopt.py", line 484, in extras
File "site-packages\colorama\ansitowin32.py", line 41, in write
File "site-packages\colorama\ansitowin32.py", line 162, in write
File "site-packages\colorama\ansitowin32.py", line 190, in write_and_convert
File "site-packages\colorama\ansitowin32.py", line 195, in write_plain_text
LookupError: unknown encoding: cp0
[2456] Failed to execute script docker-compose

[atthakorn]

In the meantime while waiting a fix, please check out workaround here https://github.com/docker/compose/issues/7169#issuecomment-576987766

[polys]

Same here:

Traceback (most recent call last):
  File "docker-compose", line 6, in <module>
  File "compose\cli\main.py", line 71, in main
  File "compose\cli\main.py", line 103, in dispatch
  File "compose\cli\docopt_command.py", line 25, in parse
  File "compose\cli\docopt_command.py", line 12, in docopt_full_help
  File "site-packages\docopt.py", line 575, in docopt
  File "site-packages\docopt.py", line 484, in extras
  File "site-packages\colorama\ansitowin32.py", line 41, in write
  File "site-packages\colorama\ansitowin32.py", line 162, in write
  File "site-packages\colorama\ansitowin32.py", line 190, in write_and_convert
  File "site-packages\colorama\ansitowin32.py", line 195, in write_plain_text
LookupError: unknown encoding: cp65001
[18308] Failed to execute script docker-compose

[andrewbanchich]

I'm also experiencing this and getting the following output repeatedly:

Traceback (most recent call last):
  File "logging\__init__.py", line 879, in emit
  File "site-packages\colorama\ansitowin32.py", line 41, in write
  File "site-packages\colorama\ansitowin32.py", line 162, in write
  File "site-packages\colorama\ansitowin32.py", line 190, in write_and_convert
  File "site-packages\colorama\ansitowin32.py", line 195, in write_plain_text
LookupError: unknown encoding: cp65001
Logged from file service.py, line 578

[ijaouani]

Same here since last update:
docker-compose version
Traceback (most recent call last):
File "docker-compose", line 6, in
File "compose\cli\main.py", line 72, in main
File "compose\cli\main.py", line 117, in perform_command
File "compose\cli\main.py", line 1134, in version
File "site-packages\colorama\ansitowin32.py", line 41, in write
File "site-packages\colorama\ansitowin32.py", line 162, in write
File "site-packages\colorama\ansitowin32.py", line 190, in write_and_convert
File "site-packages\colorama\ansitowin32.py", line 195, in write_plain_text
LookupError: unknown encoding: cp65001
[19344] Failed to execute script docker-compose

[guitarrapc]

my workaround is chcp 437 before docker-compose on 2.2.0.

[andrewbanchich]

Just using Git Bash fixes it too.

[liayn]

Just using Git Bash fixes it too.

does not work for me.

[gurutech-thomasr]

In case it gets buried, I worked around the issue by installing docker-compose via python 3.8 and pip:

> where.exe docker-compose.exe;  docker-compose version
C:\Program Files\Docker\resources\bin\docker-compose.exe
docker-compose version 1.25.2, build 698e2846
docker-py version: 4.1.0
CPython version: 2.7.16
OpenSSL version: OpenSSL 1.0.2q  20 Nov 2018

> $env:path = "C:\bin\python\38;C:\bin\python\38\Scripts;${env:path}"

> pip --version; pip install docker-compose
pip 20.0.1 from c:\bin\python\38\lib\site-packages\pip (python 3.8)

> where.exe docker-compose.exe; docker-compose version
C:\bin\Python\38\Scripts\docker-compose.exe
C:\Program Files\Docker\resources\bin\docker-compose.exe
docker-compose version 1.25.2, build unknown
docker-py version: 4.1.0
CPython version: 3.8.1
OpenSSL version: OpenSSL 1.1.1d  10 Sep 2019

The important bit is to ensure that the PATH environment variable prefers pip-installed docker-compose over the one installed with Docker Desktop for Windows.

Again, I suspect these related issues may be due to Docker Desktop for Windows bundling a docker-compose built for Python 2.7

[ulyssessouza]

Fixed by https://github.com/docker/compose/pull/7183

You can find a new release with the fix at https://github.com/docker/compose/releases/tag/1.25.3

[cardonator]

When can we expect an update to Docker Desktop with updated Docker Compose? Is there a recommended method of updating Docker Compose in Windows without janky hacks like copying over the top of the exe?

[mkoertgen]

Fixed by #7183

You can find a new release with the fix at https://github.com/docker/compose/releases/tag/1.25.3

I can confirm that docker-compose 1.25.3 fixed the problem. I worked around it by cinst -y docker-compose and making sure the chocolatey shims are placed before Docker-Desktop in PATH, .i.e.

• C:\ProgramData\chocolatey\bin before
• C:\Program Files\Docker\Docker\resources\bin

[IngwiePhoenix]

I ensured that the Chocolatey path was listed before the actual Docker installation and also ensured that I had installed the latest version. Unfortunately, the error still occurs.

PS E:\cloud.ingwie.io\Work\Maria\elch-flohmarkt.laradock> docker-compose --version
docker-compose version 1.25.2, build 698e2846
PS E:\cloud.ingwie.io\Work\Maria\elch-flohmarkt.laradock> docker-compose exec workspace bash
Traceback (most recent call last):
  File "docker-compose", line 6, in <module>
  File "compose\cli\main.py", line 72, in main
  File "compose\cli\main.py", line 128, in perform_command
  File "compose\cli\main.py", line 491, in exec_command
  File "compose\cli\main.py", line 1469, in call_docker
  File "subprocess.py", line 172, in call
  File "subprocess.py", line 394, in __init__
  File "subprocess.py", line 644, in _execute_child
TypeError: environment can only contain strings
[26840] Failed to execute script docker-compose

Any other idea?

[liayn]

@IngwiePhoenix Read above:

docker-compose 1.25.3 fixed the problem