adding apt-get update

.github/workflows/docker_images.yml

@@ -779,7 +779,7 @@ jobs:
           # In containers without GPU support, UCX does not work properly since it is configured to work with GPU-support.
           # Hence, don't enforce UCX when running these tests.
           docker exec cuda-quantum bash -c "python3 -m pip install pandas scipy pandas seaborn"
-          docker exec cuda-quantum bash -c "apt-get install -y --no-install-recommends pkg-config libhdf5-dev"
+          docker exec cuda-quantum bash -c "apt-get update && apt-get install -y --no-install-recommends pkg-config libhdf5-dev"
           (docker exec cuda-quantum bash -c "unset OMPI_MCA_pml && set -o pipefail && bash validate_container.sh | tee /tmp/validation.out") && passed=true || passed=false
           docker cp cuda-quantum:"/tmp/validation.out" /tmp/validation.out
           docker stop cuda-quantum