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

configs/packages-minimal.txt

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+# MINIMAL Alpine packages for Zero-OS embedded initramfs
+# Target: ~50MB total (not 700MB!)
+
+# Core system (essential only)
+alpine-baselayout
+busybox
+musl
+
+# Module loading & hardware detection
+eudev
+kmod
+
+# Essential networking (for Zero-OS connectivity)
+iproute2
+ethtool
+
+# Filesystem support (minimal)
+btrfs-progs
+dosfstools
+
+# Essential libraries only
+zlib
+
+# Network utilities (minimal)
+dhcpcd
+
+# NO debugging tools, NO development tools, NO SSH, NO curl/wget
+# NO python, NO redis, NO massive linux-firmware package
+# These will be loaded from RFS after network connectivity