Switch to docker buildx with multi arch flag

[danquack]

Docker buildx is dockers recommended way to build with multi arch, which relates to #102
Since there are still issues with multi arch, I put it behind a feature flag.

The suggested execution now is:
OLD bash build master
NEW bash build -p -b master

To test if multi arch builds, you can pass the -m flag.

[danquack]

I expect the pipeline to fail, since the script is changing. @gingerlime or @heynemann would you mind checking this out?

[gingerlime]

Hey @danquack. Thanks for your contribution and sorry for the delay. It's a bit of a difficult time for me right now. Regardless, I'm not entirely up-to-speed with the latest thumbor nor docker etc, but hope that with your help we can get things moving forward.

Looking at the build on Semaphore (I guess you cannot see it?), it fails with these errors:

#0 26.11 ERROR: Cannot install -r /app/requirements.txt (line 10), -r /app/requirements.txt (line 12) and -r /app/requirements.txt (line 2) because these package versions have conflicting dependencies.
#0 26.12 
#0 26.12 The conflict is caused by:
#0 26.12     remotecv 3.0.0 depends on Pillow<8.0.0 and >=7.0.0
#0 26.12     cairosvg 2.5.2 depends on pillow
#0 26.12     thumbor 7.0.0 depends on Pillow<9 and >=8.4.0
#0 26.12 
#0 26.12 To fix this you could try to:
#0 26.12 1. loosen the range of package versions you've specified
#0 26.12 2. remove package versions to allow pip attempt to solve the dependency conflict
#0 26.12 
#0 26.12 ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts
#0 26.22 WARNING: You are using pip version 22.0.4; however, version 23.0.1 is available.
#0 26.22 You should consider upgrading via the '/usr/local/bin/python -m pip install --upgrade pip' command.
------
Dockerfile:34
--------------------
  32 |     
  33 |     COPY requirements.txt /app/requirements.txt
  34 | >>> RUN pip install --trusted-host None --no-cache-dir -r /app/requirements.txt
  35 |     RUN pip install --no-dependencies tc-aws==6.2.15
  36 |     RUN pip install --no-dependencies tc-core==0.4.1
--------------------
ERROR: failed to solve: process "/bin/sh -c pip install --trusted-host None --no-cache-dir -r /app/requirements.txt" did not complete successfully: exit code: 1

It probably makes sense to switch things to github actions, so there's better visibility. I hope to get round to it, but hopefully the semaphore yml files are fairly straight-forward to understand so if someone else can step in, it can help speed things up?

[danquack]

Looking at the build on Semaphore (I guess you cannot see it?), it fails with these errors:

#0 26.11 ERROR: Cannot install -r /app/requirements.txt (line 10), -r /app/requirements.txt (line 12) and -r /app/requirements.txt (line 2) because these package versions have conflicting dependencies.
#0 26.12 
#0 26.12 The conflict is caused by:
#0 26.12     remotecv 3.0.0 depends on Pillow<8.0.0 and >=7.0.0
#0 26.12     cairosvg 2.5.2 depends on pillow
#0 26.12     thumbor 7.0.0 depends on Pillow<9 and >=8.4.0
#0 26.12 
#0 26.12 To fix this you could try to:
#0 26.12 1. loosen the range of package versions you've specified
#0 26.12 2. remove package versions to allow pip attempt to solve the dependency conflict
#0 26.12 
#0 26.12 ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts
#0 26.22 WARNING: You are using pip version 22.0.4; however, version 23.0.1 is available.
#0 26.22 You should consider upgrading via the '/usr/local/bin/python -m pip install --upgrade pip' command.
------
Dockerfile:34
--------------------
  32 |     
  33 |     COPY requirements.txt /app/requirements.txt
  34 | >>> RUN pip install --trusted-host None --no-cache-dir -r /app/requirements.txt
  35 |     RUN pip install --no-dependencies tc-aws==6.2.15
  36 |     RUN pip install --no-dependencies tc-core==0.4.1
--------------------
ERROR: failed to solve: process "/bin/sh -c pip install --trusted-host None --no-cache-dir -r /app/requirements.txt" did not complete successfully: exit code: 1

I created #119, as I am not sure there's a python match around it.

[gingerlime]

I guess we can close this and move things over to github actions? let me know if you think it's worth re-opening however.