Add cron init to allow user customizable crontabs

README.md

@@ -274,6 +274,7 @@ Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64
 
 ## Versions
 
+* **02.03.23:** - Add cron init to allow user customizable crontabs.
 * **08.02.23:** - Rebase to Alpine Edge to get access to most up to date builds of Transmission. Remove bundled 3rd party UI packages.
 * **05.01.23:** - Rebase to Alpine 3.17, restore GNU findutils package.
 * **02.11.22:** - Rebase to Alpine 3.16, migrate to s6v3.

readme-vars.yml

@@ -81,6 +81,7 @@ app_setup_block: |
 
 # changelog
 changelogs:
+  - { date: "02.03.23:", desc: "Add cron init to allow user customizable crontabs." }
   - { date: "08.02.23:", desc: "Rebase to Alpine Edge to get access to most up to date builds of Transmission. Remove bundled 3rd party UI packages." }
   - { date: "05.01.23:", desc: "Rebase to Alpine 3.17, restore GNU findutils package." }
   - { date: "02.11.22:", desc: "Rebase to Alpine 3.16, migrate to s6v3." }

root/app/blocklist-update.sh

@@ -1,4 +1,5 @@
 #!/usr/bin/with-contenv bash
+# shellcheck shell=bash
 
 BLOCKLIST_ENABLED=$(jq -r '.["blocklist-enabled"]' /config/settings.json)
 

root/etc/s6-overlay/s6-rc.d/init-crontabs-config/run

@@ -0,0 +1,22 @@
+#!/usr/bin/with-contenv bash
+# shellcheck shell=bash
+
+# make folders
+mkdir -p \
+    /config/crontabs
+
+## root
+# if crontabs do not exist in config
+if [[ ! -f /config/crontabs/root ]]; then
+    # copy crontab from system
+    if crontab -l -u root; then
+        crontab -l -u root >/config/crontabs/root
+    fi
+
+    # if crontabs still do not exist in config (were not copied from system)
+    # copy crontab from included defaults (using -n, do not overwrite an existing file)
+    cp -n /etc/crontabs/root /config/crontabs/
+fi
+# set permissions and import user crontabs
+lsiown root:root /config/crontabs/root
+crontab -u root /config/crontabs/root

root/etc/s6-overlay/s6-rc.d/init-crontabs-config/type

@@ -0,0 +1 @@
+oneshot

root/etc/s6-overlay/s6-rc.d/init-crontabs-config/up

@@ -0,0 +1 @@
+/etc/s6-overlay/s6-rc.d/init-crontabs-config/run

root/etc/s6-overlay/s6-rc.d/svc-cron/run

@@ -1,5 +1,4 @@
 #!/usr/bin/with-contenv bash
 # shellcheck shell=bash
 
-exec \
+exec /usr/sbin/crond -f -S -l 5
-    /usr/sbin/crond -f -S -l 0 -c /etc/crontabs