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Conclusions

• The multi-layered image is only slightly bigger than the mono-layered one (976 MB mono-layered, 1007 MB multi-layered, around 2% more in total ) - download time is also slightly longer by 1 s  (33.7 vs 32.7s) which is 3% longer.
• Downloading the image regularly by the users is way better in case of multi-layered image - for simulated user, downloading airflow image twice a week it is:  4950 MB  (multi-layered) vs. 13546 MB (mono-layered) downloads over the course of 8 weeks. Yielding 64% less data to download.
• Multi-layered image seems to be much better for users regularly downloading the image.

Sources for calculation

Mono-layered image:

docker history potiuk/airflow-monodocker:latest

IMAGE CREATED CREATED BY SIZE COMMENT
725143eaf153 17 minutes ago /bin/sh -c #(nop) CMD ["--help"] 0B
<missing> 17 minutes ago /bin/sh -c #(nop) ENTRYPOINT ["/entrypoint.… 0B
<missing> 17 minutes ago /bin/sh -c #(nop) COPY file:22d6c0f397f65528… 907B
<missing> 17 minutes ago |5 AIRFLOW_DEPS=all AIRFLOW_HOME=/usr/local/… 0B
<missing> 17 minutes ago /bin/sh -c #(nop) WORKDIR /usr/local/airflow 0B
<missing> 17 minutes ago |5 AIRFLOW_DEPS=all AIRFLOW_HOME=/usr/local/… 765MB
<missing> 24 minutes ago /bin/sh -c #(nop) WORKDIR /opt/airflow 0B
<missing> 24 minutes ago /bin/sh -c #(nop) ARG APT_DEPS=freetds-dev … 0B
<missing> 24 minutes ago /bin/sh -c #(nop) ARG buildDeps=freetds-dev… 0B
<missing> 24 minutes ago /bin/sh -c #(nop) ARG PYTHON_DEPS= 0B
<missing> 24 minutes ago /bin/sh -c #(nop) ARG AIRFLOW_DEPS=all 0B
<missing> 24 minutes ago /bin/sh -c #(nop) ARG AIRFLOW_HOME=/usr/loc… 0B
<missing> 24 minutes ago /bin/sh -c #(nop) COPY dir:c08fa4a00d4740680… 72.8MB
<missing> 2 weeks ago /bin/sh -c #(nop) CMD ["python3"] 0B
<missing> 2 weeks ago /bin/sh -c set -ex; savedAptMark="$(apt-ma… 7.13MB
<missing> 2 weeks ago /bin/sh -c #(nop) ENV PYTHON_PIP_VERSION=18… 0B
<missing> 2 weeks ago /bin/sh -c cd /usr/local/bin && ln -s idle3… 32B
<missing> 2 weeks ago /bin/sh -c set -ex && savedAptMark="$(apt-… 69.2MB
<missing> 2 weeks ago /bin/sh -c #(nop) ENV PYTHON_VERSION=3.6.8 0B
<missing> 2 weeks ago /bin/sh -c #(nop) ENV GPG_KEY=0D96DF4D4110E… 0B
<missing> 2 weeks ago /bin/sh -c apt-get update && apt-get install… 6.48MB
<missing> 2 weeks ago /bin/sh -c #(nop) ENV LANG=C.UTF-8 0B
<missing> 2 weeks ago /bin/sh -c #(nop) ENV PATH=/usr/local/bin:/… 0B
<missing> 2 weeks ago /bin/sh -c #(nop) CMD ["bash"] 0B
<missing> 2 weeks ago /bin/sh -c #(nop) ADD file:6d6f6f123e45697d3… 55.3MB

Multi-layered image:

docker history potiuk/airflow-layereddocker:latest

IMAGE CREATED CREATED BY SIZE COMMENT
055d0daee787 About an hour ago /bin/bash -c #(nop) CMD ["--help"] 0B
<missing> About an hour ago /bin/bash -c #(nop) ENTRYPOINT ["/entrypoin… 0B
<missing> About an hour ago /bin/bash -c #(nop) COPY file:22d6c0f397f655… 907B
<missing> About an hour ago |4 ADDITIONAL_PYTHON_DEPS= AIRFLOW_EXTRAS=al… 0B
<missing> About an hour ago /bin/bash -c #(nop) ARG ADDITIONAL_PYTHON_D… 0B
<missing> About an hour ago |3 AIRFLOW_EXTRAS=all AIRFLOW_HOME=/usr/loca… 128kB
<missing> About an hour ago |3 AIRFLOW_EXTRAS=all AIRFLOW_HOME=/usr/loca… 6.04MB
<missing> About an hour ago /bin/bash -c #(nop) COPY dir:5d6f5c2f0d7171e… 72.8MB
<missing> About an hour ago |3 AIRFLOW_EXTRAS=all AIRFLOW_HOME=/usr/loca… 523MB
<missing> About an hour ago /bin/bash -c #(nop) WORKDIR /opt/airflow 0B
<missing> 15 hours ago /bin/bash -c #(nop) COPY file:143db2e76b8f16… 1.26kB
<missing> 15 hours ago /bin/bash -c #(nop) COPY file:590340f7066102… 3.04kB
<missing> 15 hours ago /bin/bash -c #(nop) COPY file:3e78814fb55a47… 838B
<missing> 15 hours ago /bin/bash -c #(nop) COPY file:53d0bc9002b31a… 29.6kB
<missing> 15 hours ago /bin/bash -c #(nop) COPY multi:8bb5ed331b460… 14.2kB
<missing> 15 hours ago /bin/bash -c #(nop) ENV SLUGIFY_USES_TEXT_U… 0B
<missing> 15 hours ago /bin/bash -c #(nop) ENV CASS_DRIVER_NO_CYTH… 0B
<missing> 15 hours ago /bin/bash -c #(nop) ENV CASS_DRIVER_BUILD_C… 0B
<missing> 15 hours ago /bin/bash -c #(nop) ARG CASS_DRIVER_NO_CYTH… 0B
<missing> 15 hours ago /bin/bash -c #(nop) ENV FORCE_REINSTALL_ALL… 0B
<missing> 15 hours ago /bin/bash -c #(nop) ARG AIRFLOW_EXTRAS=all 0B
<missing> 15 hours ago |1 AIRFLOW_HOME=/usr/local/airflow /bin/bash… 0B
<missing> 15 hours ago /bin/bash -c #(nop) ARG AIRFLOW_HOME=/usr/l… 0B
<missing> 5 days ago /bin/bash -c apt-get update && apt-get i… 155MB
<missing> 5 days ago /bin/bash -c apt-get update && apt-get i… 118MB
<missing> 5 days ago /bin/bash -c #(nop) ENV FORCE_REINSTALL_APT… 0B
<missing> 5 days ago /bin/bash -c #(nop) ENV DEBIAN_FRONTEND=non… 0B
<missing> 5 days ago /bin/bash -c #(nop) SHELL [/bin/bash -c] 0B
<missing> 2 weeks ago /bin/sh -c #(nop) CMD ["python3"] 0B
<missing> 2 weeks ago /bin/sh -c set -ex; savedAptMark="$(apt-ma… 7.13MB
<missing> 2 weeks ago /bin/sh -c #(nop) ENV PYTHON_PIP_VERSION=18… 0B
<missing> 2 weeks ago /bin/sh -c cd /usr/local/bin && ln -s idle3… 32B
<missing> 2 weeks ago /bin/sh -c set -ex && savedAptMark="$(apt-… 69.2MB
<missing> 2 weeks ago /bin/sh -c #(nop) ENV PYTHON_VERSION=3.6.8 0B
<missing> 2 weeks ago /bin/sh -c #(nop) ENV GPG_KEY=0D96DF4D4110E… 0B
<missing> 2 weeks ago /bin/sh -c apt-get update && apt-get install… 6.48MB
<missing> 2 weeks ago /bin/sh -c #(nop) ENV LANG=C.UTF-8 0B
<missing> 2 weeks ago /bin/sh -c #(nop) ENV PATH=/usr/local/bin:/… 0B
<missing> 2 weeks ago /bin/sh -c #(nop) CMD ["bash"] 0B
<missing> 2 weeks ago /bin/sh -c #(nop) ADD file:6d6f6f123e45697d3… 55.3MB