mer. 19 août 2026 13:18:09 CEST

Dockerfile

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+FROM alpine:latest
+RUN apk add --no-cache  postgresql16-client bash
+COPY root /
+RUN chmod +x /*.sh
+EXPOSE 80
+WORKDIR /backup
+VOLUME [ "/backup" ]
+CMD ["/run.sh"]

README.md

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+Example docker-compose.yml file
+```
+services:
+  backup:
+    image: ghcr.io/emilch/postgresql-container-backup:main
+    restart: always
+    volumes:
+      - ./backup:/backup
+    environment:
+      PGSQL_USER: postgres
+      PGSQL_PASS: postgrespassword
+      PGSQL_HOST: postgresdb
+```

build.sh

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+#!/usr/bin/env bash
+export TAG=16-$(date '+%s')
+docker compose build --push
+echo "The tag to use is:  16-$TAG"

compose.yaml

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+services:
+  ttrss:
+    build: ./
+    image: registry.cheriches.eu/pgsql-backup:16-${TAG}

root/backup.sh

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+#!/bin/bash
+
+# Postgres configuration (replace with your details)
+PGUSER="your_username"
+PGHOST="your_hostname"
+PGPORT="5432"
+export PGPASSWORD="your_password"
+BACKUPDIR="/backup"
+EXCLUDE_DBS="template0 template1 postgres"  # Exclude these databases
+
+# Get date in YYYY-MM-DD format
+CURRENTDATE=$(date +%Y-%m-%d)
+
+# Function to backup a single database
+backup_database() {
+  local db_name="$1"
+  local backup_file="$BACKUPDIR/$CURRENTDATE-$db_name.sql.gz"
+
+  # Skip excluded databases
+  if [[ "$EXCLUDE_DBS" =~ " $db_name " ]]; then
+    echo "Skipping excluded database: $db_name"
+    return
+  fi
+
+  # Dump the database
+  pg_dump -h "$PGHOST" -p "$PGPORT" -U "$PGUSER" "$db_name" | gzip > "$backup_file"
+  echo "Backup completed: $backup_file"
+}
+
+# Ensure backup directory exists
+mkdir -p "$BACKUPDIR"
+
+# Get list of databases (excluding template and postgres)
+databases=$(psql -h "$PGHOST" -p "$PGPORT" -U "$PGUSER" -t -c "SELECT datname FROM pg_database WHERE datistemplate = false;")
+
+# Loop through databases and backup each one
+for db_name in $databases; do
+  backup_database "$db_name"
+done
+
+# Delete backups older than 60 days
+find "$BACKUPDIR" -type f -name "*.sql.gz" -mtime +30 -delete
+
+echo "Deleted old backups from $BACKUPDIR"

root/run.sh

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+#!/bin/sh
+sed -i -e "s#your_username#$PGSQL_USER#" \
+       -e "s#your_password#$PGSQL_PASS#" \
+       -e "s#your_hostname#$PGSQL_HOST#" \
+       /backup.sh
+
+while true; 
+    do 
+        /backup.sh
+        sleep 172800; 
+    done