feat: support start the container as non-root user (close #45, close #47)

Dockerfile

@@ -7,6 +7,8 @@ LABEL "repository"="https://github.com/ttionya/vaultwarden-backup" \
 COPY scripts/*.sh /app/
 
 RUN chmod +x /app/*.sh \
-  && apk add --no-cache bash sqlite p7zip heirloom-mailx tzdata
+  && apk add --no-cache bash heirloom-mailx p7zip sqlite supercronic tzdata \
+  && ln -sf /tmp/localtime /etc/localtime \
+  && mkdir -m 777 /bitwarden
 
 ENTRYPOINT ["/app/entrypoint.sh"]

scripts/entrypoint.sh

@@ -37,16 +37,13 @@ if [[ "$1" == "restore" ]]; then
 fi
 
 function configure_timezone() {
-    if [[ ! -f /etc/localtime || ! -f /etc/timezone ]]; then
+    ln -sf "/usr/share/zoneinfo/${TIMEZONE}" /tmp/localtime
-        cp -f "/usr/share/zoneinfo/${TIMEZONE}" /etc/localtime
-        echo "${TIMEZONE}" > /etc/timezone
-    fi
 }
 
 function configure_cron() {
-    local FIND_CRON_COUNT=$(crontab -l | grep -c 'backup.sh')
+    local FIND_CRON_COUNT="$(grep -c 'backup.sh' "${CRON_CONFIG_FILE}" 2> /dev/null)"
-    if [[ ${FIND_CRON_COUNT} -eq 0 ]]; then
+    if [[ "${FIND_CRON_COUNT}" -eq 0 ]]; then
-        echo "${CRON} bash /app/backup.sh > /dev/stdout" >> /etc/crontabs/root
+        echo "${CRON} bash /app/backup.sh" >> "${CRON_CONFIG_FILE}"
     fi
 }
 
@@ -56,4 +53,4 @@ configure_timezone
 configure_cron
 
 # foreground run crond
-crond -l 2 -f
+supercronic -passthrough-logs -quiet "${CRON_CONFIG_FILE}"

scripts/includes.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
 
 ENV_FILE="/.env"
+CRON_CONFIG_FILE="${HOME}/crontabs"
 BACKUP_DIR="/bitwarden/backup"
 RESTORE_DIR="/bitwarden/restore"
 RESTORE_EXTRACT_DIR="/bitwarden/extract"