Update base images to use Debian bullseye

[mbargull]

This is the same as gh-16 but with the pre-release of the upcoming Debian 11.
It is just for comparison as a draft PR; whenever Debian 11 is released, we can update to a proper release version.

[mbargull]

$ podman history quay.io/bioconda/base-glibc-busybox-bash:1.1.0                                                                                                                                                                                                                  
ID            CREATED       CREATED BY                                     SIZE     COMMENT
88d66d0acde3  24 hours ago  /bin/sh                                        1.02 kB  
<missing>     24 hours ago  /bin/sh -c #(nop) CMD [ "bash" ]               0 B      
<missing>     24 hours ago  /bin/sh -c #(nop) ENTRYPOINT [ "/usr/local...  0 B      
<missing>     24 hours ago  /bin/sh -c #(nop) ENV LANG=C.UTF-8             0 B      
<missing>     24 hours ago  /bin/sh -c #(nop) COPY dir:1650bf223b28a79...  10.5 MB  

$ podman history quay.io/bioconda/base-glibc-debian-bash:1.1.0                                                                                                                                                                                                                   
ID            CREATED       CREATED BY                                     SIZE     COMMENT
2278f7f1c6dd  24 hours ago  /bin/sh                                        1.02 kB  
<missing>     24 hours ago  /bin/sh -c #(nop) CMD [ "bash" ]               0 B      
<missing>     24 hours ago  /bin/sh -c #(nop) ENTRYPOINT [ "/usr/local...  0 B      
<missing>     24 hours ago  /bin/sh -c #(nop) ENV LANG=C.UTF-8             0 B      
<missing>     24 hours ago  /bin/sh -c touch /usr/local/env-activate.s...  5.12 kB  
<missing>     24 hours ago  /bin/sh -c >> /etc/inputrc       printf '%...  2.56 kB  
<missing>     24 hours ago  /bin/sh -c apt-get update -qq     &&     a...  18.9 MB  
a938944ae096  10 days ago   /bin/sh -c #(nop)  CMD ["bash"]                0 B      
<missing>     10 days ago   /bin/sh -c #(nop) ADD file:1d706af41693329...  58.5 MB  

From gh-16 (i.e., Debian 10-based):

ID            CREATED        CREATED BY                                     SIZE     COMMENT
5850b6933bfc  4 seconds ago  /bin/sh                                        1.02 kB  
1bac99d340eb  8 seconds ago  /bin/sh -c #(nop) CMD [ "bash" ]               0 B      
<missing>     8 seconds ago  /bin/sh -c #(nop) ENTRYPOINT [ "/usr/local...  0 B      
<missing>     8 seconds ago  /bin/sh -c #(nop) ENV LANG=C.UTF-8             0 B      
<missing>     9 seconds ago  /bin/sh -c #(nop) COPY dir:4e134b440e514ae...  11.5 MB  

ID            CREATED         CREATED BY                                     SIZE     COMMENT
01a2cc5d5663  5 seconds ago   /bin/sh                                        1.02 kB  
48c8180160b2  10 seconds ago  /bin/sh -c #(nop) CMD [ "bash" ]               0 B      
<missing>     10 seconds ago  /bin/sh -c #(nop) ENTRYPOINT [ "/usr/local...  0 B      
<missing>     10 seconds ago  /bin/sh -c #(nop) ENV LANG=C.UTF-8             0 B      
<missing>     10 seconds ago  /bin/sh -c touch /usr/local/env-activate.s...  5.12 kB  
cbaec245a1b9  12 seconds ago  /bin/sh -c >> /etc/inputrc       printf '%...  2.56 kB  
55cadc8a6cd4  15 seconds ago  /bin/sh -c apt-get update -qq     &&     a...  22.2 MB  
5b395270ee77  10 days ago     /bin/sh -c #(nop)  CMD ["bash"]                0 B      
<missing>     10 days ago     /bin/sh -c #(nop) ADD file:3c32f1cd03198e1...  72.5 MB  

From this PR (i.e., Debian bullseye-based):

ID            CREATED        CREATED BY                                     SIZE     COMMENT
15f9fb5b5535  4 seconds ago  /bin/sh                                        1.02 kB  
de5206fab0a7  9 seconds ago  /bin/sh -c #(nop) CMD [ "bash" ]               0 B      
<missing>     9 seconds ago  /bin/sh -c #(nop) ENTRYPOINT [ "/usr/local...  0 B      
<missing>     9 seconds ago  /bin/sh -c #(nop) ENV LANG=C.UTF-8             0 B      
<missing>     9 seconds ago  /bin/sh -c #(nop) COPY dir:7cb2f282946eb9f...  11.6 MB  

ID            CREATED         CREATED BY                                     SIZE     COMMENT
4a2d407e4d1c  5 seconds ago   /bin/sh                                        1.02 kB  
0f34c3a8aaaf  10 seconds ago  /bin/sh -c #(nop) CMD [ "bash" ]               0 B      
<missing>     10 seconds ago  /bin/sh -c #(nop) ENTRYPOINT [ "/usr/local...  0 B      
<missing>     10 seconds ago  /bin/sh -c #(nop) ENV LANG=C.UTF-8             0 B      
<missing>     10 seconds ago  /bin/sh -c touch /usr/local/env-activate.s...  5.12 kB  
f5d9ec47cd5f  12 seconds ago  /bin/sh -c >> /etc/inputrc       printf '%...  2.56 kB  
664ee827cc4a  14 seconds ago  /bin/sh -c apt-get update -qq     &&     a...  17.9 MB  
dab3ed5a7a48  10 days ago     /bin/sh -c #(nop)  CMD ["bash"]                0 B      
<missing>     10 days ago     /bin/sh -c #(nop) ADD file:ce2168a68a0fd7b...  83.8 MB  

[martin-g]

This PR can be closed! It has been done with #58