Merge pull request #722 from strukturag/docker-graceful-stop

docker: Add helper scripts to gracefully stop / wait for server.

docker/server/Dockerfile

@@ -19,9 +19,12 @@ RUN adduser -D spreedbackend && \
 COPY --from=builder /workdir/bin/signaling /usr/bin/nextcloud-spreed-signaling
 COPY ./server.conf.in /config/server.conf.in
 COPY ./docker/server/entrypoint.sh /
+COPY ./docker/server/stop.sh /
+COPY ./docker/server/wait.sh /
 RUN chown spreedbackend /config
 RUN /usr/bin/nextcloud-spreed-signaling -version
 
 USER spreedbackend
 
+STOPSIGNAL SIGUSR1
 ENTRYPOINT [ "/entrypoint.sh" ]

docker/server/stop.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+#
+# Standalone signaling server for the Nextcloud Spreed app.
+# Copyright (C) 2024 struktur AG
+#
+# @author Joachim Bauch <[email protected]>
+#
+# @license GNU AGPL version 3 or any later version
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+set -e
+
+echo "Schedule signaling server to shutdown ..."
+exec killall -USR1 nextcloud-spreed-signaling

docker/server/wait.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+#
+# Standalone signaling server for the Nextcloud Spreed app.
+# Copyright (C) 2024 struktur AG
+#
+# @author Joachim Bauch <[email protected]>
+#
+# @license GNU AGPL version 3 or any later version
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+set -e
+
+echo "Waiting for signaling server to shutdown ..."
+while true
+do
+  if ! pgrep nextcloud-spreed-signaling > /dev/null ; then
+    echo "Signaling server has stopped"
+    exit 0
+  fi
+  sleep 1
+done