feat: set named build-context to spack-environment

.gitlab-ci.yml

@@ -258,7 +258,7 @@ jug_dev:default:
                    --build-arg S3_SECRET_KEY=${S3_SECRET_KEY}
                    --build-arg JUG_VERSION=${INTERNAL_TAG}-$(git rev-parse HEAD)
                    --build-arg jobs=${JOBS}
-                   --build-context spack=.
+                   --build-context spack-environment=spack-environment
                    --secret id=mirrors,src=mirrors.yaml
                    containers/jug
       ; done

containers/jug/dev.Dockerfile

@@ -101,7 +101,7 @@ RUN git clone https://github.com/${EICSPACK_ORGREPO}.git ${EICSPACK_ROOT} \
  && spack repo add --scope site "${EICSPACK_ROOT}"
 
 ## Setup our custom environment (secret mount for write-enabled mirror)
-COPY --from=spack spack-environment/ /opt/spack-environment/
+COPY --from=spack-environment . /opt/spack-environment/
 ARG ENV=dev
 ENV SPACK_ENV=/opt/spack-environment/${ENV}
 RUN --mount=type=cache,target=/ccache,id=${TARGETPLATFORM}              \