Bump all build go versions to v1.21.0
Bump the minimum build package version to v1.19.0
Debian "buster" is not longer supported. Security updates have been
discontinued since June 30th 2022. We will build using the latest
version, "bookworm".
By defining the full name for the docker image we avoid the issue that
occurs when using `podman` (tested on Fedora 38) where podman will prompt the
user for what docker repository to pull the image from.
This allows users to see progress whenever the docker image is
[re]built, and (esp on non-linux hosts) track the size of the build
context being uploaded. Currently no output is displayed, so it's hard
to attribute the source of latency, e.g. network latency, building
layers, a large work directory, etc.
Now that we have a base docker image that has all our RPC compilation
dependencies installed, we can also run the mobile RPC compilation
there. This removes the need to install falafel and goimports on the
local machine.
This commit aims to make it easier for developers to compile our
protobuf definitions. They now only need to have docker installed
instead of a whole set of binaries and libraries all pinned to very
specific versions.
