filer store: add foundationdb (#7178)

* add foundationdb

* Update foundationdb_store.go

* fix

* apply the patch

* avoid panic on error

* address comments

* remove extra data

* address comments

* adds more debug messages

* fix range listing

* delete with prefix range; list with right start key

* fix docker files

* use the more idiomatic FoundationDB KeySelectors

* address comments

* proper errors

* fix API versions

* more efficient

* recursive deletion

* clean up

* clean up

* pagination, one transaction for deletion

* error checking

* Use fdb.Strinc() to compute the lexicographically next string and create a proper range

* fix docker

* Update README.md

* delete in batches

* delete in batches

* fix build

* add foundationdb build

* Updated FoundationDB Version

* Fixed glibc/musl Incompatibility (Alpine → Debian)

* Update container_foundationdb_version.yml

* build SeaweedFS

* build tag

* address comments

* separate transaction

* address comments

* fix build

* empty vs no data

* fixes

* add go test

* Install FoundationDB client libraries

* nil compare

docker/get_fdb_checksum.sh

@@ -0,0 +1,61 @@
+#!/bin/bash
+# Helper script to get SHA256 checksum for FoundationDB client package
+# Usage: ./get_fdb_checksum.sh <version> [arch]
+# Example: ./get_fdb_checksum.sh 7.4.5 amd64
+# Example: ./get_fdb_checksum.sh 7.4.5 arm64
+
+set -euo pipefail
+
+if [ $# -lt 1 ] || [ $# -gt 2 ]; then
+    echo "Usage: $0 <fdb_version> [arch]" >&2
+    echo "Example: $0 7.4.5" >&2
+    echo "Example: $0 7.4.5 arm64" >&2
+    exit 1
+fi
+
+FDB_VERSION="$1"
+FDB_ARCH="${2:-amd64}"
+
+case "$FDB_ARCH" in
+    "amd64")
+        CANONICAL_ARCH="amd64"
+        PACKAGE_ARCH="amd64"
+        ;;
+    "arm64"|"aarch64")
+        CANONICAL_ARCH="arm64"
+        PACKAGE_ARCH="aarch64"
+        ;;
+    *)
+        echo "Error: Architecture must be 'amd64', 'arm64', or 'aarch64'" >&2
+        exit 1
+        ;;
+esac
+
+PACKAGE="foundationdb-clients_${FDB_VERSION}-1_${PACKAGE_ARCH}.deb"
+URL="https://github.com/apple/foundationdb/releases/download/${FDB_VERSION}/${PACKAGE}"
+
+echo "Downloading FoundationDB ${FDB_VERSION} client package for ${FDB_ARCH}..."
+echo "URL: ${URL}"
+echo ""
+
+# Download to temp directory
+TEMP_DIR=$(mktemp -d)
+trap 'rm -rf "${TEMP_DIR}"' EXIT
+
+cd "${TEMP_DIR}"
+if wget --timeout=30 --tries=3 -q "${URL}"; then
+    CHECKSUM=$(sha256sum "${PACKAGE}" | awk '{print $1}')
+    echo "✓ Download successful"
+    echo ""
+    echo "SHA256 Checksum:"
+    echo "${CHECKSUM}"
+    echo ""
+    echo "Add this to Dockerfile.foundationdb_large:"
+    echo "    \"${FDB_VERSION}_${CANONICAL_ARCH}\") \\"
+    echo "        EXPECTED_SHA256=\"${CHECKSUM}\" ;; \\"
+else
+    echo "✗ Failed to download package from ${URL}" >&2
+    echo "Please verify the version number, architecture, and URL" >&2
+    exit 1
+fi
+