First attempt at just building it

Dockerfile

@@ -464,7 +464,44 @@ RUN install-ubuntu-packages \
     cmake-curses-gui \
     gdb \
     libasan8 \
-    lld
+    lld \
+    rsync # Required for Pythia8's make install command
+
+ENV PYTHIA_VERSION="8.310"
+ENV PYTHIA_MAJOR_VERSION=8
+LABEL pythia8.version=${PYTHIA8_VERSION}
+#"6.428"
+# Pythia uses an un-dotted version file naming convention. To deal with that
+# we need some string manipulation and exports that work best with bash
+SHELL ["/bin/bash", "-c"]
+#ENV PYTHIA_MAJOR_VERSION=$(awk '{print int($1) }' <<< ${PYTHIA_VERSION} )
+#    export PYTHIA_MAJOR_VERSION=$(awk '{print int($1) }' <<< ${PYTHIA_VERSION} )  &&\
+
+RUN mkdir src && \
+    git clone https://gitlab.com/Pythia8/releases/ --single-branch --branch pythia8310 pythia8 && \
+    cd pythia8 && ./configure --cxx-common="-O3 -g -std=c++17" --prefix ${__prefix} && \
+    make -j${NPROC} && \
+    make install && \
+    cd ../ && rm -rf src
+RUN mkdir src && \
+    export PYTHIA_VERSION_INTEGER=$(awk '{print $1*1000}' <<< ${PYTHIA_VERSION} )  &&\
+    export PREVIOUS_PYTHIA_VERSION_INTEGER=$(awk '{print $1*1000}' <<< ${PREVIOUS_PYTHIA_VERSION} )  &&\
+    ${__wget} https://root.cern.ch/download/pythia${PYTHIA_MAJOR_VERSION}.tar.gz | ${__untar} &&\
+    wget --no-check-certificate https://pythia.org/download/pythia${PYTHIA_MAJOR_VERSION}/pythia${PYTHIA_VERSION_INTEGER}.f &&\
+    mv pythia${PYTHIA_VERSION_INTEGER}.f src/pythia${PYTHIA_VERSION_INTEGER}.f && rm -rf src/pythia${PREVIOUS_PYTHIA_VERSION_INTEGER}.f &&\
+    cd src/ &&\
+    sed -i 's/int py/extern int py/g' pythia${PYTHIA_MAJOR_VERSION}_common_address.c && \
+    sed -i 's/extern int pyuppr/int pyuppr/g' pythia${PYTHIA_MAJOR_VERSION}_common_address.c && \
+    sed -i 's/char py/extern char py/g' pythia${PYTHIA_MAJOR_VERSION}_common_address.c && \
+    echo 'void MAIN__() {}' >main.c && \
+    gcc -c -fPIC -shared main.c -lgfortran && \
+    gcc -c -fPIC -shared pythia${PYTHIA_MAJOR_VERSION}_common_address.c -lgfortran && \
+    gfortran -c -fPIC -shared pythia*.f && \
+    gfortran -c -fPIC -shared -fno-second-underscore tpythia${PYTHIA_MAJOR_VERSION}_called_from_cc.F && \
+    gfortran -shared -Wl,-soname,libPythia${PYTHIA_MAJOR_VERSION}.so -o libPythia${PYTHIA_MAJOR_VERSION}.so main.o  pythia*.o tpythia*.o &&\
+    mkdir -p ${__prefix}/pythia${PYTHIA_MAJOR_VERSION} && cp -r * ${__prefix}/pythia${PYTHIA_MAJOR_VERSION}/ &&\
+    cd ../ && rm -rf src &&\
+    echo "${__prefix}/pythia${PYTHIA_MAJOR_VERSION}/" > /etc/ld.so.conf.d/pythia${PYTHIA_MAJOR_VERSION}.conf
 
 # add any ssl certificates to the container to trust
 COPY ./certs/ /usr/local/share/ca-certificates