Install 64-bit Node in container, for its libraries

According to
actions/checkout#334 (comment),
which is aboute a different but related problem, some 64-bit
libraries are missing that get keep the (it seems, existing and
already mapped) Node.js outside the container from being run, and
installing Node.js in the container with `apt-get` installs the
necessary dependencies, allowing the (existing) Node.js to be used.

Although the error is reported differently (here, the error does
not say anything about `/etc/*release`, the effect where it looks
like the `node` binary does not run but actually something *it*
tries to run does not run, seems to be the same. So maybe this
will help.

Author: EliahKagan

.github/workflows/ci.yml

@@ -152,11 +152,9 @@ jobs:
     steps:
       - name: Prerequisites
         run: |
+          dpkg --add-architecture amd64  # For 64-bit Node.js, for actions.
           apt-get update
-          apt-get install --no-install-recommends -y build-essential ca-certificates cmake curl git jq libssl-dev nodejs pkgconf
-          #mkdir -p /__e/node20/bin
-          #ln -s /usr/bin/node /__e/node20/bin/node
-          file /__e/node20/bin/node
+          apt-get install --no-install-recommends -y build-essential ca-certificates cmake curl git jq libssl-dev nodejs:amd64 pkgconf
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
         with: