Set the UMASK in the entry script, added some brief step documentation, also Gitea action workflow attempt.

Dockerfile

@@ -3,25 +3,26 @@ LABEL maintainer="crovaxon"
 
 WORKDIR /app
 
+# user and group id are typical defaults for UNRAID
 ENV PUID=99
 ENV PGID=100
 ENV UMASK=022
 ENV PATH="/app:${PATH}"
 
-#RUN addgroup -g ${GUID} foundry
-#RUN adduser -H -u ${PUID} -s /bin/bash foundry foundry
-#USER foundry
-
+# update and install requirements
 RUN apk update & apk add --no-cache ca-certificates libstdc++ su-exec bash-completion tar nodejs npm
 
+# copy entrypoint script to work directory
 COPY entrypoint.sh ./
 
-# directory of the Foundry application
+# mount volume directory of the Foundry application
 VOLUME /foundry
-#directory of the Foundry user data
+
+# mount volume directory of the Foundry user data
 VOLUME /foundrydata
 
-# default TCP port
+# expose default TCP port
 EXPOSE 30000
 
+#run entrypoint
 ENTRYPOINT ["/app/entrypoint.sh"]