Update Dockerfile

[juhoinkinen]

This

• updates Docker image to use Python 3.8
• changes dependencies to be installed from setup.py (pip install .[voikko,...]) instead of installing with separate pip call (thus removing need to have versions pinned in both setup.py and Dockerfile)
• removes unnecessary installation and linking steps in build-stage (nowdays Vowpal Wabbit has wheel in PyPI)
• reorders layers a bit (Annif source is copied after dependencies are installed, so build should be faster)
• installs Yake in Docker image

[codecov]

Codecov Report

Merging #498 (d0bb31d) into master (a29900e) will decrease coverage by 5.83%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #498      +/-   ##
==========================================
- Coverage   99.50%   93.66%   -5.84%     
==========================================
  Files          78       78              
  Lines        5669     5669              
==========================================
- Hits         5641     5310     -331     
- Misses         28      359     +331     

Impacted Files	Coverage Δ
tests/test_backend_vw_multi.py	3.94% <0.00%> (-95.40%)	⬇️
annif/backend/vw_multi.py	2.50% <0.00%> (-95.00%)	⬇️
annif/analyzer/voikko.py	10.52% <0.00%> (-84.22%)	⬇️
tests/test_analyzer_voikko.py	25.00% <0.00%> (-75.00%)	⬇️
annif/analyzer/__init__.py	97.56% <0.00%> (-2.44%)	⬇️
annif/backend/__init__.py	98.07% <0.00%> (-1.93%)	⬇️
annif/backend/stwfsa.py	98.48% <0.00%> (-1.52%)	⬇️
tests/test_cli.py	98.93% <0.00%> (-1.07%)	⬇️
annif/cli.py	99.24% <0.00%> (-0.38%)	⬇️

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[osma]

Whoa! All these improvements, and the Dockerfile is now almost 40 lines shorter :) Great work!

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

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