Merge pull request #1 from Rajpratik71/optimization/pip-no-cache-dir

use `--no-cache-dir` flag to `pip` in dockerfiles to save space

Author: ArangoGutierrez

Dockerfile

@@ -11,7 +11,7 @@ COPY --from=builder /go/src/github.com/ArangoGutierrez/archspec-feature-discover
 
 # Install Spack
 RUN dnf update -y && dnf install git python38 python3-pip -y
-RUN pip3 install archspec
+RUN pip3 install --no-cache-dir archspec
 RUN dnf clean all
 
 RUN useradd afd-side-car