chore: Reduce size of docker image (#444)

* chore: Reduce size of docker image

* chore: Add org.opencontainers.image.description field

* chore: Update base image to use generic versions

.dockerignore

@@ -0,0 +1,93 @@
+# Git
+.git
+.gitignore
+.gitattributes
+
+
+# CI
+.codeclimate.yml
+.travis.yml
+.taskcluster.yml
+
+# Docker
+docker-compose.yml
+Dockerfile
+.docker
+.dockerignore
+
+# Byte-compiled / optimized / DLL files
+**/__pycache__/
+**/*.py[cod]
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.cache
+nosetests.xml
+coverage.xml
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Virtual environment
+.env
+.venv/
+venv/
+
+# PyCharm
+.idea
+
+# Python mode for VIM
+.ropeproject
+**/.ropeproject
+
+# Vim swap files
+**/*.swp
+
+# VS Code
+.vscode/
+
+tests/**
+examples/**
+

Dockerfile

@@ -1,14 +1,25 @@
 ARG PYTHON_VER=3.9
+ARG IMG_OPTION=alpine
 
-FROM python:${PYTHON_VER}-slim
+### BUILDER
+
+FROM python:${PYTHON_VER}-${IMG_OPTION} as BUILDER
 
 RUN pip install --upgrade pip
 
 WORKDIR /local
 COPY . /local
 
 ENV PYTHONPATH=/local
-RUN pip --no-cache-dir install .
+ENV PATH=$PATH:/root/.local/bin
+
+RUN pip --no-cache-dir install --user .
+
+# ----------------------------------- #
+
+### BASE
+
+FROM python:${PYTHON_VER}-${IMG_OPTION} as BASE
 
 # Opencontainer labels
 # Labels version and revision will be updating
@@ -18,6 +29,7 @@ RUN pip --no-cache-dir install .
 # Doc: https://docs.docker.com/engine/reference/commandline/run/#label
 LABEL   "org.opencontainers.image.title"="anta" \
         "org.opencontainers.artifact.description"="network-test-automation in a Python package and Python scripts to test Arista devices." \
+        "org.opencontainers.image.description"="network-test-automation in a Python package and Python scripts to test Arista devices." \
         "org.opencontainers.image.source"="https://github.com/arista-netdevops-community/anta" \
         "org.opencontainers.image.url"="https://www.anta.ninja" \
         "org.opencontainers.image.documentation"="https://www.anta.ninja" \
@@ -28,4 +40,7 @@ LABEL   "org.opencontainers.image.title"="anta" \
         "org.opencontainers.image.revision"="dev" \
         "org.opencontainers.image.version"="dev"
 
-ENTRYPOINT [ "/usr/local/bin/anta" ]
+COPY --from=BUILDER /root/.local/ /root/.local
+ENV PATH=$PATH:/root/.local/bin
+
+ENTRYPOINT [ "/root/.local/bin/anta" ]