Add tini and process group reaping (#723)

Author: lloesche

Dockerfile

@@ -133,6 +133,7 @@ RUN groupadd -g "${PGID:-0}" -o valheim \
     libpulse-dev \
     libatomic1 \
     libc6 \
+    tini \
     && echo 'LANG="en_US.UTF-8"' > /etc/default/locale \
     && echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen \
     && rm -f /bin/sh \

bootstrap

@@ -13,7 +13,7 @@ main() {
     setup_supervisor_http_server
     setup_status_http_server
     pre_supervisor_hook
-    exec /usr/local/bin/supervisord -c /usr/local/etc/supervisord.conf
+    exec /usr/bin/tini -- /usr/local/bin/supervisord -c /usr/local/etc/supervisord.conf
 }
 
 

supervisord.conf

@@ -30,6 +30,8 @@ stdout_logfile_maxbytes=1MB
 stderr_logfile_maxbytes=1MB
 autostart=true
 autorestart=true
+stopasgroup=true
+killasgroup=true
 priority=20
 
 [program:valheim-bootstrap]
@@ -71,6 +73,8 @@ stdout_logfile_maxbytes=1MB
 stderr_logfile_maxbytes=1MB
 autostart=false
 autorestart=true
+stopasgroup=true
+killasgroup=true
 priority=50
 
 [program:valheim-backup]
@@ -83,6 +87,8 @@ stdout_logfile_maxbytes=1MB
 stderr_logfile_maxbytes=1MB
 autostart=false
 autorestart=true
+stopasgroup=true
+killasgroup=true
 priority=50
 
 [include]