First commit

Dockerfile

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+# === Dockerfile ===
+FROM postgres:17-alpine
+
+# Install Docker CLI + bash + core utilities
+RUN apk add --no-cache docker-cli bash coreutils
+
+# Create backup directory
+RUN mkdir -p /backups
+
+# Copy backup script
+COPY backup.sh /usr/local/bin/backup.sh
+RUN chmod +x /usr/local/bin/backup.sh
+
+# Use bash as default
+ENTRYPOINT ["/usr/local/bin/backup.sh"]
+

backup.sh

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+#!/bin/sh
+# === Postgres Auto Backup Script ===
+# Description: Finds all Postgres containers and runs pg_dumpall.
+# Author: Calahil Studios
+
+# === CONFIGURATION ===
+BACKUP_DIR="/backups/postgres"
+KNOWN_IMAGES="
+  postgres:17.0-alpine \
+  postgres:17 \
+  postgres \
+  lscr.io/linuxserver/postgres \
+  postgres:14.0-alpine \
+  ghcr.io/immich-app/postgres:14-vectorchord0.4.3-pgvectors0.2.0 
+  "
+
+echo "[INFO] Starting PostgreSQL backup service..."
+mkdir -p "$BACKUP_DIR"
+while true; do
+  TIMESTAMP=$(date +'%Y-%m-%d_%H-%M-%S')
+  echo "[INFO] Starting backup at $TIMESTAMP"
+  echo "[INFO] Checking for Postgres containers..."
+
+  # === FIND MATCHING CONTAINERS ===
+  for container in $(docker ps --format "{{.ID}} {{.Image}}" | while read -r ID IMAGE; do
+    for pattern in $KNOWN_IMAGES; do
+      case "$IMAGE" in
+      *"$pattern"*)
+        echo "$ID"
+        break
+        ;;
+      esac
+    done
+  done) do
+    NAME=$(docker inspect --format '{{.Name}}' "$container" | sed 's#^/##')
+    mkdir -p "$BACKUP_DIR}/${NAME}"
+    FILE="$BACKUP_DIR/${NAME}/${TIMESTAMP}.sql"
+
+    echo "[INFO] Backing up container: $NAME ($container)"
+    if docker exec "$container" pg_dumpall -U postgres >"$FILE" 2>/tmp/pg_backup_error.log; then
+      echo "[SUCCESS] Backup complete for $NAME -> $FILE"
+    else
+      echo "[ERROR] Backup failed for $NAME (check /tmp/pg_backup_error.log)"
+    fi
+  done
+
+  echo "[INFO] All backups done."
+  echo "[INFO] Sleeping for ${INTERVAL_HOURS} hours..."
+  sleep "${INTERVAL_HOURS}h"
+done

docker-compose.yml

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+services:
+  backupbot:
+    image: gitea.calahilstudios.com/calahil/backupbot
+    container_name: backupbot
+    environment:
+      - TZ=Etc/UTC
+    volumes:
+      # Backup folder to store dumps (accessible by Duplicati)
+      - /srv/backups/postgres:/backups
+      # Docker socket to list containers
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+    restart: unless-stopped