split Dockerfile build into two stages

[kentbull]

One stage for building, one for the runtime. This enables near-instantaneous builds of source only changes

[codecov]

Codecov Report

Merging #104 (4ffb4fc) into development (05c7eab) will increase coverage by 1.52%.
Report is 6 commits behind head on development.
The diff coverage is 84.16%.

@@               Coverage Diff               @@
##           development     #104      +/-   ##
===============================================
+ Coverage        88.20%   89.72%   +1.52%     
===============================================
  Files               30       34       +4     
  Lines             4789     5247     +458     
===============================================
+ Hits              4224     4708     +484     
+ Misses             565      539      -26     

Files Changed	Coverage Δ
tests/app/test_specing.py	100.00% <ø> (ø)
src/keria/app/grouping.py	22.36% <22.36%> (ø)
src/keria/peer/exchanging.py	30.55% <30.55%> (ø)
src/keria/end/ending.py	85.71% <50.00%> (+54.34%)	⬆️
src/keria/app/agenting.py	84.01% <100.00%> (+2.69%)	⬆️
src/keria/app/aiding.py	85.17% <100.00%> (+7.42%)	⬆️
src/keria/app/credentialing.py	79.00% <100.00%> (+0.73%)	⬆️
src/keria/app/notifying.py	100.00% <100.00%> (ø)
src/keria/app/presenting.py	96.61% <100.00%> (+1.69%)	⬆️
src/keria/testing/testing_helper.py	99.29% <100.00%> (ø)
... and 8 more

... and 2 files with indirect coverage changes

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[lenkan]

@kentbull This is great and speeds up the testing flow a great deal. Do you have any plans to merge this?

[kentbull]

Though I don't have merge access it would be nice if this was merged.

[lenkan]

I am using a different structure than this and have some thoughts... Do you need to use venv and a multi stage build to achieve this? I suggest keeping the single stage build and only separate the dependency and source with layers.

I suggest to use something like this:

FROM python:3.10.4-alpine3.16

RUN apk update && apk add --no-cache alpine-sdk libffi-dev libsodium libsodium-dev bash && curl https://sh.rustup.rs -sSf | bash -s -- -y

WORKDIR /keria
COPY requirements.txt setup.py /keria/
RUN mkdir /keria/src
RUN source "$HOME/.cargo/env" && pip install -r requirements.txt

COPY src/ src/
COPY scripts/keri/ scripts/keri/

ENTRYPOINT [ "keria" ]
CMD ["keria", "start",  "--config-file", "demo-witness-oobis", "--config-dir", "./scripts"]

Arguably, the config with hard coded witness oobis should be left out and provided by whoever starts the image. But that could wait.

[pfeairheller]

The codecov failures are not accurate here, going to merge.