Termine container exit with '/usr/bin/env: ‘bash\r’: No such file or directory'

[StefanNeubert]

Running 'docker-compose up --build -d' the 'termine' container exit with error:
'/usr/bin/env: ‘bash\r’: No such file or directory'

To Reproduce
Steps to reproduce the behavior:

1. git clone https://github.com/Public-Health-Informatics-Munich/covid19-teststation-termine.git (60583c5)
2. cd covid19-teststation-termine
3. docker-compose up --build -d

Expected behavior
The application starts an is accessible at http://localhost:8000

Desktop (please complete the following information):

• Windows 10 Professional Version 10.0.19042 Build 19042

• Client: Docker Engine - Community
  Cloud integration: 1.0.12
  Version: 20.10.5
  API version: 1.41
  Go version: go1.13.15
  Git commit: 55c4c88
  Built: Tue Mar 2 20:14:53 2021
  OS/Arch: windows/amd64
  Context: default
  Experimental: true
  Server: Docker Engine - Community
  Engine:
  Version: 20.10.5
  API version: 1.41 (minimum version 1.12)
  Go version: go1.13.15
  Git commit: 363e9a8
  Built: Tue Mar 2 20:15:47 2021
  OS/Arch: linux/amd64
  Experimental: false
  containerd:
  Version: 1.4.4
  GitCommit: 05f951a3781f4f2c1911b05e61c160e9c30eaa8e
  runc:
  Version: 1.0.0-rc93
  GitCommit: 12644e614e25b05da6fd08a38ffa0cfe1903fdec
  docker-init:
  Version: 0.19.0
  GitCommit: de40ad0

• docker-compose version 1.29.0, build 07737305
  docker-py version: 5.0.0
  CPython version: 3.9.0
  OpenSSL version: OpenSSL 1.1.1g 21 Apr 2020