Fix alpine-docker build in different arch issue

Author: crazywhalecc

bin/spc-alpine-docker

@@ -1,12 +1,14 @@
-#!/usr/bin/env sh
+#!/usr/bin/env bash
+
+set -e
 
 # This file is using docker to run commands
-SPC_DOCKER_VERSION=v3
+SPC_DOCKER_VERSION=v4
 
 # Detect docker can run
 if ! which docker >/dev/null; then
-  echo "Docker is not installed, please install docker first !"
-  exit 1
+    echo "Docker is not installed, please install docker first !"
+    exit 1
 fi
 DOCKER_EXECUTABLE="docker"
 # shellcheck disable=SC2046
@@ -22,27 +24,48 @@ if [ $(id -u) -ne 0 ]; then
     fi
 fi
 
-
-
-# to check if qemu-docker run
-if [ "$SPC_USE_ARCH" = "" ]; then
-    SPC_USE_ARCH=x86_64
+# Convert uname to gnu arch
+CURRENT_ARCH=$(uname -m)
+if [ "$CURRENT_ARCH" = "arm64" ]; then
+    CURRENT_ARCH=aarch64
+fi
+if [ -z "$SPC_USE_ARCH" ]; then
+    SPC_USE_ARCH=$CURRENT_ARCH
 fi
+# parse SPC_USE_ARCH
 case $SPC_USE_ARCH in
-x86_64)
-    ALPINE_FROM=alpine:edge
+x86_64|amd64)
+    SPC_USE_ARCH=x86_64
+    if [ "$CURRENT_ARCH" != "x86_64" ]; then
+        PLATFORM_ARG="--platform linux/amd64"
+        ALPINE_FROM=multiarch/alpine:x86_64-edge
+    fi
     ;;
-aarch64)
-    ALPINE_FROM=multiarch/alpine:aarch64-edge
-    # shellcheck disable=SC2039
-    echo -e "\e[033m* Using different arch needs to setup qemu-static for docker !\e[0m"
-    $DOCKER_EXECUTABLE run --rm --privileged multiarch/qemu-user-static:register --reset > /dev/null
+aarch64|arm64)
+    SPC_USE_ARCH=aarch64
+    if [ "$CURRENT_ARCH" != "aarch64" ]; then
+        PLATFORM_ARG="--platform linux/arm64"
+        ALPINE_FROM=multiarch/alpine:aarch64-edge
+    fi
     ;;
 *)
     echo "Current arch is not supported to run in docker: $SPC_USE_ARCH"
     exit 1
     ;;
 esac
+# if ALPINE_FROM is not set, use alpine:edge
+if [ -z "$ALPINE_FROM" ]; then
+    ALPINE_FROM=alpine:edge
+fi
+if [ "$SPC_USE_ARCH" != "$CURRENT_ARCH" ]; then
+    echo "* Using different arch needs to setup qemu-static for docker !"
+    ALPINE_FROM=multiarch/alpine:$SPC_USE_ARCH-edge
+    if [ "$(uname -s)" = "Linux" ]; then
+        $DOCKER_EXECUTABLE run --rm --privileged multiarch/qemu-user-static:register --reset > /dev/null
+    fi
+else
+    ALPINE_FROM=alpine:edge
+fi
 
 if [ "$SPC_USE_MIRROR" = "yes" ]; then
     SPC_USE_MIRROR="RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.tuna.tsinghua.edu.cn/g' /etc/apk/repositories"
@@ -53,7 +76,7 @@ fi
 # Detect docker env is setup
 if ! $DOCKER_EXECUTABLE images | grep -q cwcc-spc-$SPC_USE_ARCH-$SPC_DOCKER_VERSION; then
     echo "Docker container does not exist. Building docker image ..."
-    $DOCKER_EXECUTABLE build -t cwcc-spc-$SPC_USE_ARCH-$SPC_DOCKER_VERSION -f- . <<EOF
+    $DOCKER_EXECUTABLE build $PLATFORM_ARG -t cwcc-spc-$SPC_USE_ARCH-$SPC_DOCKER_VERSION -f- . <<EOF
 FROM $ALPINE_FROM
 $SPC_USE_MIRROR
 RUN apk update; \
@@ -148,7 +171,7 @@ if [ "$SPC_DOCKER_DEBUG" = "yes" ]; then
     echo "*    ./pkgroot:   $(pwd)/pkgroot"
     echo "*"
     set -ex
-    $DOCKER_EXECUTABLE run --rm $INTERACT $ENV_LIST $MOUNT_LIST cwcc-spc-$SPC_USE_ARCH-$SPC_DOCKER_VERSION
+    $DOCKER_EXECUTABLE run $PLATFORM_ARG --rm $INTERACT $ENV_LIST $MOUNT_LIST cwcc-spc-$SPC_USE_ARCH-$SPC_DOCKER_VERSION /bin/bash
 else
-    $DOCKER_EXECUTABLE run --rm $INTERACT $ENV_LIST $MOUNT_LIST cwcc-spc-$SPC_USE_ARCH-$SPC_DOCKER_VERSION bin/spc $@
+    $DOCKER_EXECUTABLE run $PLATFORM_ARG --rm $INTERACT $ENV_LIST $MOUNT_LIST cwcc-spc-$SPC_USE_ARCH-$SPC_DOCKER_VERSION bin/spc $@
 fi