ci: Fix cargo build failure on Fedora 43/44 in Containerfile.packit

Set CARGO_HOME=/var/tmp/.cargo to avoid conflict with /root/.cargo
which exists as a non-directory on Fedora 43/44 base images, causing
"failed to create directory: File exists (os error 17)".

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Xiaofeng Wang <henrywangxf@me.com>

diff --git a/hack/Containerfile.packit b/hack/Containerfile.packit
index efb3261ffb57c7fb4434438fe212ba020ec746f8..14b0eed2b7c688c2cc877c5ccdbc692ef22c99cb 100644 (file)
--- a/hack/Containerfile.packit
+++ b/hack/Containerfile.packit
@@ -38,9 +38,9 @@ EORUN
 
 COPY tests/bootc-integration /build/tests/bootc-integration
 WORKDIR /build/tests/bootc-integration
-RUN cargo build --release && \
+RUN CARGO_HOME=/var/tmp/.cargo cargo build --release && \
     cp target/release/ostree-bootc-integration-tests /usr/bin/ && \
-    rm -rf /build
+    rm -rf /build /var/tmp/.cargo
 
 WORKDIR /ostree-test