interruption handling

.gitignore

@@ -0,0 +1,2 @@
+docker-compose.yaml
+config/

Dockerfile

@@ -6,7 +6,7 @@ RUN \
 
 COPY rootfs /
 
-HEALTHCHECK  --interval=2m --timeout=3s \
+HEALTHCHECK --interval=1m --timeout=3s --start-period=20s --retries=1 \
   CMD /app/healthcheck.sh || exit 1
 
 ENTRYPOINT [ "/sbin/tini", "/app/entrypoint.sh" ]

rootfs/app/backup.sh

@@ -1,10 +1,7 @@
 #!/bin/sh
 
-set -o pipefail
-
 STATUS_FILE=/last_backup_status.txt
 
-
 MARIADB_HOST=${MARIADB_HOST:-db}
 MARIADB_USER=${MARIADB_USER:-root}
 MARIADB_PORT=${MARIADB_PORT:-3306}
@@ -22,10 +19,17 @@ BACKUP_FILE="${TMPDIR}/${DEST_FILENAME}"
 
 trap cleanup EXIT
 cleanup() {
-#   rm -rf "${TMPDIR}"
+  rm -rf "${TMPDIR}"
   echo "Removed temporary file"
 }
 
+trap interrupt INT
+interrupt() {
+  echo "Backup interrupted"
+  echo "interrupted" > "${STATUS_FILE}"
+  exit 1
+}
+
 if [ ! -f "${RCLONE_CONFIG_FILE}" ]; then
   echo "Rclone config file not found"
   exit 1
@@ -51,7 +55,7 @@ copy_failed() {
   exit 1
 }
 
-COMPRESSOR=cat
+COMPRESSOR="cat"
 if [ "${COMPRESSION}" = "gzip" ]; then
   COMPRESSOR="gzip"
   BACKUP_FILE="${BACKUP_FILE}.gz"
@@ -85,9 +89,9 @@ mariadb-dump \
   --quick \
   --triggers \
   --tz-utc -v \
-  --host=${MARIADB_HOST} \
+  --host="${MARIADB_HOST}" \
-  --port=${MARIADB_PORT} \
+  --port="${MARIADB_PORT}" \
-  --user=${MARIADB_USER} \
+  --user="${MARIADB_USER}" \
   --password="${MARIADB_PASSWORD}" \
   --databases "${MARIADB_DATABASE}" | "${COMPRESSOR}" > "${BACKUP_FILE}" || dump_failed
 

rootfs/app/entrypoint.sh

@@ -4,4 +4,5 @@ CRONTAB=${CRONTAB:-"0 12 * * *"}
 
 echo "${CRONTAB} /app/backup.sh" > /etc/crontabs/root
 
-crond -f
+echo "Starting cron"
+crond -f -d 7