Initial commit: Alpine Zero-OS initramfs build system with cleaned Docker configuration

configs/packages-boot.txt

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+# MINIMAL BOOT PACKAGES FOR EMBEDDED INITRAMFS
+# Target: ~10-20MB embedded in kernel
+# Purpose: Boot, establish network, mount runtime Alpine system
+
+# Absolute minimum Alpine base
+alpine-baselayout
+busybox
+musl
+
+# Hardware detection and drivers
+eudev
+kmod
+
+# Network connectivity (essential for mounting runtime system)
+iproute2
+dhcpcd
+ethtool
+
+# Mount utilities for runtime system
+util-linux
+
+# Essential libraries only
+zlib
+
+# NO debugging, NO development tools, NO SSH server
+# NO extra packages - keep this list minimal!
+# Runtime tools will be available in mounted Alpine system