feat: add restic (#1044)

* feat: add restic

allows incremental snapshot backups
remove custom push-backup script

* ci: remove .git dir to skip fetch_details_from_tag

fixes https://github.com/frappe/frappe_docker/actions/runs/3938883301/jobs/6738091655

images/production/Containerfile

@@ -19,6 +19,8 @@ RUN useradd -ms /bin/bash frappe \
     libharfbuzz0b \
     libpangoft2-1.0-0 \
     libpangocairo-1.0-0 \
+    # For backups
+    restic \
     # MariaDB
     mariadb-client \
     # Postgres
@@ -62,7 +64,6 @@ RUN useradd -ms /bin/bash frappe \
 
 COPY resources/nginx-template.conf /templates/nginx/frappe.conf.template
 COPY resources/nginx-entrypoint.sh /usr/local/bin/nginx-entrypoint.sh
-COPY resources/push_backup.py /usr/local/bin/push-backup
 
 FROM base AS builder
 
@@ -108,7 +109,7 @@ RUN bench init \
   bench get-app --branch=${ERPNEXT_BRANCH} --resolve-deps erpnext ${ERPNEXT_REPO} && \
   echo "$(jq 'del(.db_host, .redis_cache, .redis_queue, .redis_socketio)' sites/common_site_config.json)" \
     > sites/common_site_config.json && \
-  find apps -name .git -type d -prune | xargs -i git --git-dir {} remote rm upstream
+  find apps -mindepth 1 -path "*/.git" | xargs rm -fr
 
 FROM base as erpnext