shellcheck

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}
@@ -51,7 +48,7 @@ copy_failed() {
   exit 1
 }
 
-COMPRESSOR=cat
+COMPRESSOR="cat"
 if [ "${COMPRESSION}" = "gzip" ]; then
   COMPRESSOR="gzip"
   BACKUP_FILE="${BACKUP_FILE}.gz"
@@ -85,9 +82,9 @@ mariadb-dump \
   --quick \
   --triggers \
   --tz-utc -v \
-  --host=${MARIADB_HOST} \
-  --port=${MARIADB_PORT} \
-  --user=${MARIADB_USER} \
+  --host="${MARIADB_HOST}" \
+  --port="${MARIADB_PORT}" \
+  --user="${MARIADB_USER}" \
   --password="${MARIADB_PASSWORD}" \
   --databases "${MARIADB_DATABASE}" | "${COMPRESSOR}" > "${BACKUP_FILE}" || dump_failed