[Bug Report] Dockerfile fails to build from master and v0.26.2 tag on Windows

[tylercamp]

Describe the bug
Attempting to build a docker image fails with error:

#13 100.8 Using sanitize (0.1.0 at e09520e)
#13 100.8 crystal build src/mango.cr --release --progress --static --error-trace
#13 101.0 In src/mango.cr:1:1
#13 101.0
#13 101.0  1 | require "./config"
#13 101.0      ^
#13 101.0 Error: while requiring "./config"
#13 101.0
#13 101.0
#13 101.0 In src/config.cr:50:58
#13 101.0
#13 101.0  50 | puts "The config file #{cfg_path} does not exist. " \
#13 101.0                                                            ^
#13 101.0 Error: unknown token: '\r'
make: *** [Makefile:18: static] Error 1

To Reproduce
Clone the repo and run docker build -t XYZ .

Environment (please complete the following information):

• OS: Windows 11, using Docker with WSL 2 backend
• Mango Version: master, v0.26.2

Docker (if you are running Mango in a Docker container)

• I've copied the env.example file and renamed to .env, no modifications

Additional context
I'm attempting to build the image myself so I can add an EXPOSE 9000 line to the Dockerfile; explicit EXPOSE is needed in the docker image for Traefik which auto-detects ports for containers and exposes them behind HTTPS.

I've not tried older tags.

[hkalexling]

Windows line breaks strike again :) Can you give #306 (comment) a try?

[tylercamp]

@hkalexling Thank you for that note and quick response, I've instead cloned and built the repo using Ubuntu on Windows (instead of via Windows terminal) and I was able to build the image without issue