patch original run-eressea.cron instead of duplicating script

Dockerfile

@@ -36,6 +36,7 @@ RUN mkdir -p /eressea/server && \
 FROM eressea-base as eressea
 ARG eressea_branch
 COPY docker-assets/backup-eressea.patch /eressea/
+COPY docker-assets/run-eressea.cron.patch /eressea/
 RUN DEBIAN_FRONTEND="noninteractive" apt-get install -y \
     cmake luarocks libxml2-dev liblua5.2-dev libtolua-dev libncurses5-dev libsqlite3-dev \
     libexpat1-dev && \
@@ -44,6 +45,7 @@ RUN DEBIAN_FRONTEND="noninteractive" apt-get install -y \
     cd git.eressea && \
     git submodule update --init && \
     patch process/backup-eressea < /eressea/backup-eressea.patch && \
+    patch process/cron/run-eressea.cron < /eressea/run-eressea.cron.patch && \
     s/cmake-init && \
     s/build && \
     ln -sf conf/eressea.ini && \
@@ -76,13 +78,13 @@ RUN apt-get update && \
 
 COPY docker-assets/template-config/ /eressea/template-config/
 COPY docker-assets/lua-scripts/ /eressea/lua-scripts/
-COPY docker-assets/run-eressea.sh /eressea/run-eressea.sh
 COPY docker-assets/start.sh /eressea/start.sh
 COPY --from=eressea /eressea/server/ /eressea/server/
 COPY --from=eressea /eressea/server/etc/report-mail.de.txt /eressea/template-mail/report-mail.de.txt
 COPY --from=eressea /eressea/server/etc/report-mail.en.txt /eressea/template-mail/report-mail.en.txt
 COPY --from=eressea /eressea/git.eressea/scripts/tools /eressea/server/scripts/tools
 COPY --from=eressea /eressea/git.eressea/s/preview /eressea/server/bin/
+COPY --from=eressea /eressea/git.eressea/process/cron/run-eressea.cron /eressea/run-eressea.sh
 COPY --from=eressea /usr/games/echeck /usr/games/echeck
 COPY --from=eressea /usr/share/locale/de/LC_MESSAGES/ /usr/share/locale/de/LC_MESSAGES/
 COPY --from=eressea /usr/share/games/echeck/ /usr/share/games/echeck/

docker-assets/run-eressea.cron.patch

@@ -0,0 +1,29 @@
+--- /eressea/server/bin/run-eressea.cron	2020-12-12 15:09:21.000000000 +0000
++++ /eressea/run-eressea.sh	2020-12-07 21:09:58.000000000 +0000
+@@ -1,7 +1,12 @@
+ #!/bin/bash
+
++# this script is based on run-eressea.cron
++# differences to original
++#   it is possible to run a turn with empty orders
++
+ eval "$(luarocks path)"
+ GAME=$1
++ENABLE_EMPTY_ORDERS=$2
+ (
+ [ "$ENABLED" == "no" ] && exit
+ [ -z "$ERESSEA" ] && ERESSEA="$HOME/eressea"
+@@ -27,8 +32,10 @@
+
+ "$BIN/create-orders" "$GAME" "$TURN"
+ if [ ! -s "$ERESSEA/game-$GAME/orders.$TURN" ]; then
+-  echo "server did not create orders for turn $TURN in game $GAME"
+-  exit 2
++    if [ "$ENABLE_EMPTY_ORDERS" != "yes" ]; then
++      echo "server did not create orders for turn $TURN in game $GAME"
++      exit 2
++    fi
+ fi
+
+ "$BIN/backup-eressea" "$GAME" "$TURN"
+ 

docker-assets/run-eressea.sh

@@ -1,62 +0,0 @@
-#!/bin/bash
-
-# this script is based on run-eressea.cron
-# differences to original
-#   it is possible to run a turn with empty orders 
-
-eval "$(luarocks path)"
-GAME=$1
-ENABLE_EMPTY_ORDERS=$2
-(
-[ "$ENABLED" == "no" ] && exit
-[ -z "$ERESSEA" ] && ERESSEA="$HOME/eressea"
-
-export ERESSEA
-BIN="$ERESSEA/server/bin"
-TURN=$(cat "$ERESSEA/game-$GAME/turn")
-if [ ! -e "$ERESSEA/game-$GAME/data/$TURN.dat" ]; then
-  echo "data file $TURN is missing, cannot run turn for game $GAME"
-  exit 1
-fi
-REPORTS="$ERESSEA/game-$GAME/reports"
-if [ -d "$REPORTS" ]; then
-  rm -rf "$REPORTS"
-fi
-mkdir "$REPORTS"
-
-cd "$ERESSEA/game-$GAME" || exit
-
-if [ -d test ]; then
-  touch test/execute.lock
-fi
-
-"$BIN/create-orders" "$GAME" "$TURN"
-if [ ! -s "$ERESSEA/game-$GAME/orders.$TURN" ]; then
-    if [ "$ENABLE_EMPTY_ORDERS" != "yes" ]; then
-      echo "server did not create orders for turn $TURN in game $GAME"
-      exit 2
-    fi
-fi
-
-"$BIN/backup-eressea" "$GAME" "$TURN"
-rm -f execute.lock
-"$BIN/run-turn" "$GAME" "$TURN"
-touch execute.lock
-
-if [ ! -s "$REPORTS/reports.txt" ]; then
-  echo "server did not create reports.txt in game $GAME"
-  exit 4
-fi
-"$BIN/backup-eressea" "$GAME" "$TURN"
-let TURN=$TURN+1
-if [ ! -s "$ERESSEA/game-$GAME/data/$TURN.dat" ]; then
-  echo "server did not create data for turn $TURN in game $GAME"
-  exit 3
-fi
-echo "sending reports for game $GAME, turn $TURN"
-"$BIN/compress.sh" "$GAME" "$TURN"
-"$BIN/sendreports.sh" "$GAME"
-"$BIN/backup-eressea" "$GAME" "$TURN"
-rm -f test/execute.lock
-) | tee -a "$HOME/log/eressea.cron.log"
-