initial

mirror_alpine.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+ALPINE_VERSION="v3.23"
+PACKAGES=("bash" "curl" "jq" "git" "docker")
+REPOS=("main" "community")
+BASE_URL="https://dl-cdn.alpinelinux.org/alpine"
+DEST_DIR="."
+ARCHES=("x86_64" "aarch64" "armv7") # only mirror the arches you care about
+CURL_OPTS="-fSL --retry 3 --retry-delay 2 --connect-timeout 10"
+
+mkdir -p "$DEST_DIR"
+
+# Function to download a single package and its deps for a given arch
+download_pkg() {
+    local pkg="$1"
+    local arch="$2"
+    local found=false
+
+    for repo in "${REPOS[@]}"; do
+        local index_url="${BASE_URL}/${ALPINE_VERSION}/${repo}/${arch}/APKINDEX.tar.gz"
+        local tmpdir
+        tmpdir=$(mktemp -d)
+        trap "rm -rf $tmpdir" EXIT
+
+        echo "📥 Fetching APKINDEX: $index_url"
+        if ! curl $CURL_OPTS "$index_url" -o "$tmpdir/APKINDEX.tar.gz"; then
+            echo "⚠️ Failed to fetch $index_url, skipping."
+            continue
+        fi
+
+        tar -xzf "$tmpdir/APKINDEX.tar.gz" -C "$tmpdir"
+
+        # Extract version for the package
+        local version
+        version=$(grep -A1 "^P:${pkg}$" "$tmpdir"/APKINDEX | grep "^V:" | cut -d':' -f2 | sed 's/^[ \t]*//;s/[ \t]*$//' || true)
+
+        if [ -z "$version" ]; then
+            continue
+        fi
+
+        local file="${pkg}-${version}.apk"
+        local out_dir="${DEST_DIR}/${ALPINE_VERSION}/${arch}"
+        mkdir -p "$out_dir"
+
+        if [ ! -f "$out_dir/$file" ]; then
+            echo "🔽 Downloading $file for arch $arch from $repo"
+            curl $CURL_OPTS "${BASE_URL}/${ALPINE_VERSION}/${repo}/${arch}/${file}" -o "$out_dir/$file"
+        else
+            echo "ℹ️ $file already exists for arch $arch, skipping download."
+        fi
+
+        found=true
+
+        # Handle dependencies
+        local deps
+        deps=$(grep -A10 "^P:${pkg}$" "$tmpdir"/APKINDEX | grep "^D:" | cut -d':' -f2- | sed 's/^[ \t]*//' || true)
+        for dep in $deps; do
+            # Strip version constraints (e.g., >1.0, =2.0) to get base dep name
+            dep_name=$(echo "$dep" | sed 's/[><=].*//;s/so://')
+            if [ -n "$dep_name" ] && [ "$dep_name" != "$pkg" ]; then
+                download_pkg "$dep_name" "$arch"
+            fi
+        done
+
+        break  # Stop after finding in one repo
+    done
+
+    if ! $found; then
+        echo "⚠️ Package not found: $pkg for arch $arch"
+    fi
+}
+
+for arch in "${ARCHES[@]}"; do
+    echo "=============================="
+    echo "📦 Processing architecture: $arch"
+    echo "=============================="
+    for pkg in "${PACKAGES[@]}"; do
+        download_pkg "$pkg" "$arch"
+    done
+done
+
+echo
+echo "✅ Done! Packages saved under: ${DEST_DIR}/${ALPINE_VERSION}/"