add dockerfile

.dockerignore

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+build
+CMakeFiles
+tests/**/*.pyc
+.github
+.pytest_cache
+*.tar.gz

docker/Dockerfile.base

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+FROM almalinux:8
+MAINTAINER Sarun Nuntaviriyakul <[email protected]>
+LABEL org.opencontainers.image.source https://github.com/guyzsarun/xrootd-cmsjson
+
+WORKDIR /xrootd
+
+RUN yum -y update && \
+    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"
+
+# CMS json dependency
+RUN yum install -y  cmake \
+                    wget \
+                    xrootd \
+                    python3-devel \
+                    python3-xrootd \
+                    xrootd-devel \
+                    pcre-devel \
+                    xerces-c-devel \
+                    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  \
+                    https://cbs.centos.org/kojifiles/packages/jsoncpp/1.9.4/4.el8s/x86_64/jsoncpp-devel-1.9.4-4.el8s.x86_64.rpm

docker/Dockerfile.test

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+ARG base_img
+FROM $base_img
+
+MAINTAINER Sarun Nuntaviriyakul <[email protected]>
+LABEL org.opencontainers.image.source https://github.com/guyzsarun/xrootd-cmsjson
+
+RUN pip3 install pytest
+
+COPY . .
+
+RUN mkdir -p build
+RUN cd build                         &&  \
+       cmake .. -DBUILD_TEST=true    &&  \
+       make                          &&  \
+       make install
+