Do some code quality check and fix #126

bin/spc-alpine-docker

@@ -2,18 +2,18 @@
 
 # This file is using docker to run commands
 
-self_dir=$(cd "$(dirname "$0")";pwd)
-
 # Detect docker can run
 if ! which docker >/dev/null; then
   echo "Docker is not installed, please install docker first !"
   exit 1
 fi
 DOCKER_EXECUTABLE="docker"
+# shellcheck disable=SC2046
 if [ $(id -u) -ne 0 ]; then
     if ! docker info > /dev/null 2>&1; then
         if [ "$SPC_USE_SUDO" != "yes" ]; then
             echo "Docker command requires sudo"
+            # shellcheck disable=SC2039
             echo -n 'To use sudo to run docker, run "export SPC_USE_SUDO=yes" and run command again'
             exit 1
         fi
@@ -33,6 +33,7 @@ x86_64)
     ;;
 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"
     $DOCKER_EXECUTABLE run --rm --privileged multiarch/qemu-user-static:register --reset > /dev/null
     ;;
@@ -65,10 +66,10 @@ ADD ./bin /app/bin
 RUN composer update --no-dev
 EOF
 )
-    echo "$ALPINE_DOCKERFILE" > $(pwd)/Dockerfile
+    echo "$ALPINE_DOCKERFILE" > "$(pwd)"/Dockerfile
 
     $DOCKER_EXECUTABLE build -t cwcc-spc-$SPC_USE_ARCH .
-    rm $(pwd)/Dockerfile
+    rm "$(pwd)"/Dockerfile
 fi
 
 # Check if in ci (local terminal can execute with -it)
@@ -79,4 +80,5 @@ else
 fi
 
 # Run docker
-$DOCKER_EXECUTABLE run --rm $INTERACT -e SPC_FIX_DEPLOY_ROOT=$(pwd) -v $(pwd)/config:/app/config -v $(pwd)/src:/app/src -v $(pwd)/buildroot:/app/buildroot -v $(pwd)/source:/app/source -v $(pwd)/downloads:/app/downloads cwcc-spc-$SPC_USE_ARCH bin/spc $@
+# shellcheck disable=SC2068
+$DOCKER_EXECUTABLE run --rm "$INTERACT" -e SPC_FIX_DEPLOY_ROOT="$(pwd)" -v "$(pwd)"/config:/app/config -v "$(pwd)"/src:/app/src -v "$(pwd)"/buildroot:/app/buildroot -v "$(pwd)"/source:/app/source -v "$(pwd)"/downloads:/app/downloads cwcc-spc-$SPC_USE_ARCH bin/spc $@