Try bashrc

Dockerfile

@@ -16,7 +16,8 @@ RUN chmod +x /usr/local/bin/apt.postgresql.org.sh \
     && rm -r cpanm ~/.cpanm \
     && echo Defaults	lecture = never >> /etc/sudoers \
     && perl -i -pe 's/\bALL$/NOPASSWD:ALL/g' /etc/sudoers \
-    && echo 'postgres	ALL=(ALL:ALL) NOPASSWD:ALL' >> /etc/sudoers
+    && echo 'postgres	ALL=(ALL:ALL) NOPASSWD:ALL' >> /etc/sudoers \
+    && echo 'git config --global --add safe.directory "${GITHUB_WORKSPACE:-${PWD}}"' >> /etc/bash.bashrc
 
 COPY bin/* /usr/local/bin/
 

bin/entrypoint.sh

@@ -4,10 +4,7 @@ set -e
 
 # Ensure Git can do stuff in the working directory.
 # https://github.com/pgxn/docker-pgxn-tools/issues/5
-echo "SETTING DIRECTORY TO ${GITHUB_WORKSPACE:-${PWD}}" > /tmp/entrypoint.txt
-git config --system --add safe.directory "${GITHUB_WORKSPACE:-${PWD}}"
-git config --global --add safe.directory "${GITHUB_WORKSPACE:-${PWD}}"
-env >> /tmp/entrypoint.txt
+# git config --system --add safe.directory "${GITHUB_WORKSPACE:-${PWD}}"
 
 # Just continue if unprivileged user not requested.
 [ -z "$AS_USER" ] && exec "$@"