Refactor/project structure (#3085)

* refactor project structure

* environment-based default registry

* fix tests

* update build container

* use docker platform for iso build emulation

* simplify compat

* Fix docker platform spec in run-compat.sh

* handle riscv compat

* fix bug with dep error exists attr

* undo removal of sorting

* use qemu for iso stage

---------

Co-authored-by: Mariusz Kogen <k0gen@pm.me>
Co-authored-by: Matt Hill <mattnine@protonmail.com>

core/build/build-startbox.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+cd "$(dirname "${BASH_SOURCE[0]}")"
+
+source ./builder-alias.sh
+
+set -ea
+shopt -s expand_aliases
+
+PROFILE=${PROFILE:-release}
+if [ "${PROFILE}" = "release" ]; then
+	BUILD_FLAGS="--release"
+else
+  if [ "$PROFILE" != "debug"]; then
+    >&2 echo "Unknown profile $PROFILE: falling back to debug..."
+    PROFILE=debug
+  fi
+fi
+
+if [ -z "$ARCH" ]; then
+	ARCH=$(uname -m)
+fi
+
+if [ "$ARCH" = "arm64" ]; then
+  ARCH="aarch64"
+fi
+
+RUST_ARCH="$ARCH"
+if [ "$ARCH" = "riscv64" ]; then
+  RUST_ARCH="riscv64gc"
+fi
+
+cd ../..
+FEATURES="$(echo $ENVIRONMENT | sed 's/-/,/g')"
+RUSTFLAGS=""
+
+if [[ "${ENVIRONMENT}" =~ (^|-)console($|-) ]]; then
+	RUSTFLAGS="--cfg tokio_unstable"
+fi
+
+echo "FEATURES=\"$FEATURES\""
+echo "RUSTFLAGS=\"$RUSTFLAGS\""
+rust-zig-builder cargo zigbuild --manifest-path=./core/Cargo.toml $BUILD_FLAGS --features=$FEATURES --locked --bin startbox --target=$RUST_ARCH-unknown-linux-musl
+if [ "$(ls -nd "core/target/$RUST_ARCH-unknown-linux-musl/$PROFILE/startbox" | awk '{ print $3 }')" != "$UID" ]; then
+  rust-zig-builder sh -c "chown -R $UID:$UID core/target && chown -R $UID:$UID  /usr/local/cargo"
+fi