Sync paths with CI pipeline due to dockerignore#

As the docker ignore file includes the target dir, content in this dir
is no accessible to the docker daemon.
We circumvent this by providing the build artifact in a dir called
cached_dir

tests/Complement.Dockerfile

@@ -9,7 +9,7 @@ ARG SCCACHE_ENDPOINT
 ARG SCCACHE_S3_USE_SSL
 
 COPY . .
-RUN test -e target/release/conduit || cargo build --release --offline
+RUN test -e cached_target/release/conduit || cargo build --release
 
 FROM valkum/docker-rust-ci:latest
 WORKDIR /workdir