refactor docker

.dockerignore

@@ -2,4 +2,5 @@ build
 CMakeFiles
 tests/**/*.pyc
 .github
-.pytest_cache
+.pytest_cache
+*.tar.gz

docker/Dockerfile

@@ -5,35 +5,18 @@ LABEL org.opencontainers.image.source https://github.com/guyzsarun/xrootd-cmsjso
 WORKDIR /xrootd
 
 RUN yum -y update && \
-    yum install -y dnf
+    yum install -y dnf \
+        https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm \
+        https://repo.opensciencegrid.org/osg/3.6/osg-3.6-el8-release-latest.rpm \
+        epel-release
 
 RUN dnf group install -y "Development Tools"
-RUN dnf -y install \
-        cmake \
-        diffutils \
-        file \
-        fuse-devel \
-        gcc-c++ \
-        git \
-        json-c-devel \
-        krb5-devel \
-        libtool \
-        libuuid-devel \
-        libxml2-devel \
-        make \
-        openssl-devel \
-        python3-devel \
-        python3-setuptools \
-        readline-devel \
-        systemd-devel \
-        zlib-devel
-
-RUN yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm \
-         https://repo.opensciencegrid.org/osg/3.6/osg-3.6-el8-release-latest.rpm \
-         epel-release
 
 # CMS json dependency
-RUN yum install -y  xrootd \
+RUN yum install -y  cmake \
+                    wget \
+                    xrootd \
+                    python3-devel \
                     python3-xrootd \
                     xrootd-devel \
                     https://cbs.centos.org/kojifiles/packages/jsoncpp/1.9.4/4.el8s/x86_64/jsoncpp-1.9.4-4.el8s.x86_64.rpm  \