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Dockerfile: frozen images: update to bullseye, remove buildpack-dep

Update the frozen images to also be based on Debian bullseye. Using the "slim"
variant (which looks to have all we're currently using),  and remove the
buildpack-dep frozen image.

The buildpack-dep image is quite large, and it looks like we only use it to
compile some C binaries, which should work fine on a regular debian image;

    docker build -t debian:bullseye-slim-gcc -<<EOF
    FROM debian:bullseye-slim
    RUN apt-get update && apt-get install -y gcc libc6-dev --no-install-recommends
    EOF

    docker image ls

    REPOSITORY        TAG                 IMAGE ID       CREATED          SIZE
    debian            bullseye-slim-gcc   1851750242af   About a minute ago   255MB
    buildpack-deps    bullseye            fe8fece98de2   2 days ago           834MB

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2021-08-19 23:40:38 +02:00
parent 1effe7435a
commit f68260ba22
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12 changed files with 33 additions and 31 deletions

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@ -1,4 +1,5 @@
FROM buildpack-deps:buster
FROM debian:bullseye-slim
RUN apt-get update && apt-get install -y gcc libc6-dev --no-install-recommends
COPY . /usr/src/