ci: run distcheck on arm

Author: marcoieni

src/ci/docker/host-x86_64/x86_64-gnu-distcheck/Dockerfile renamed to src/ci/docker/host-aarch64/aarch64-gnu-distcheck/Dockerfile

@@ -24,6 +24,6 @@ RUN sh /scripts/sccache.sh
 # We are disabling CI LLVM since distcheck is an offline build.
 ENV NO_DOWNLOAD_CI_LLVM 1
 
-ENV RUST_CONFIGURE_ARGS --build=x86_64-unknown-linux-gnu --set rust.omit-git-hash=false
+ENV RUST_CONFIGURE_ARGS --build=aarch64-unknown-linux-gnu --set rust.omit-git-hash=false
 ENV SCRIPT python3 ../x.py --stage 2 test distcheck
 ENV DIST_SRC 1

src/ci/github-actions/jobs.yml

@@ -323,8 +323,8 @@ auto:
   - name: x86_64-gnu-debug
     <<: *job-linux-4c
 
-  - name: x86_64-gnu-distcheck
-    <<: *job-linux-8c
+  - name: aarch64-gnu-distcheck
+    <<: *job-aarch64-linux
 
   # The x86_64-gnu-llvm-20 job is split into multiple jobs to run tests in parallel.
   # x86_64-gnu-llvm-20-1 skips tests that run in x86_64-gnu-llvm-20-{2,3}.