ci: merge docker images

[yihau]

Problem

1. If we only upgraded rust for the stable version, we will need to hack the nightly image to ensure compatibility with both the old stable version and the new stable version for transferring to avoid enforcing everyone to rebase master.
2. we have already use rust-toolchain.toml and ci/rust-version.sh to specify version. it should be okay to have a all-in-one ci docker environment.

Summary of Changes

1. merge stable and nightly docker images into a single docker image. the new name is solanalabs/ci:rust_${stable_version}_${nightly_version}
2. add a new docker-run script to simplify pipeline script.

[t-nelson]

any corresponding changes needed to the update instructions in ci/docker-rust*/README.md?

[yihau]

yeah. I thought to remove all of them in another PR but seems that it's better to get them all happen here! will push them later!

[t-nelson]

yeah. I thought to remove all of them in another PR but seems that it's better to get them all happen here! will push them later!

nice. thanks!

[t-nelson]

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (a16f982) 81.6% compared to head (ec6ad00) 81.6%.
Report is 14 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #35078   +/-   ##
=======================================
  Coverage    81.6%    81.6%           
=======================================
  Files         830      830           
  Lines      225019   225019           
=======================================
+ Hits       183675   183754   +79     
+ Misses      41344    41265   -79