[anaconda] Refactor Dockerfile to decrease image size

[alexander-smolyakov]

Description:

During patch development, the CI checks for the anaconda devcontainer started to fail due to the space limit on a hosted agent.

After investigation, it turned out that layer where we set up ownership and permission for the opt folder consumes a lot of space. This is related to using of chown and chmod commands.

Related code:

images/src/anaconda/.devcontainer/Dockerfile

Lines 88 to 92 in 47bbd23

	RUN groupadd -r conda --gid 900 \
	&& chown -R :conda /opt/conda \
	&& chmod -R g+w /opt/conda \
	&& find /opt -type d | xargs -n 1 chmod g+s \
	&& usermod -aG conda ${USERNAME}

Fix:

To fix this and reduce image size, the Docker file was refactored:

• The pip install and conda install commands now executes against the continuumio/anaconda3 image. This will allow us to not worry about opt folder permissions and ownership since we can set them up during COPY instruction;

• The COPY instruction now sets up permissions and ownership for the opt folder. The COPY instruction will not create an additional layer, which should help decrease image size;

• Previous commands for setting up permissions and ownership were removed.

[samruddhikhandale]

It is super cool to see the image size decrease from ~9 GB to ~5 GB 🎉 ✨
Thank you!

Left some comments!

[samruddhikhandale]

Look great, thank you! 🎉