Add arm64 support (#20)

Co-authored-by: odidev <[email protected]>

Dockerfile

@@ -1,6 +1,6 @@
 FROM alpine:edge
 
-ARG VERSION=1.7.3.2
+ARG VERSION=1.7.4.3-r0
 
 RUN apk --no-cache add socat=${VERSION}
 

build.sh

@@ -21,7 +21,7 @@ curl -s https://pkgs.alpinelinux.org/package/edge/main/x86/socat | docker run -i
 latest=$(awk '/^Version/ {print $2}' report)
 
 sum=0
-echo "Lastest release is: ${latest}"
+echo "Latest release is: ${latest}"
 
 tags=`curl -s https://hub.docker.com/v2/repositories/${image}/tags/ |jq -r .results[].name`
 
@@ -33,13 +33,11 @@ do
 done
 
 if [[ ( $sum -ne 1 ) || ( $1 == "rebuild" ) ]];then
- docker build --build-arg VERSION=${latest} --no-cache -t ${image}:${latest} .
- docker tag ${image}:${latest} ${image}:latest
-
  if [[ "$TRAVIS_BRANCH" == "master" ]]; then
  docker login -u $DOCKER_USERNAME -p $DOCKER_PASSWORD
- docker push ${image}:${latest}
- docker push ${image}:latest
+ docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
+ docker buildx create --use
+ docker buildx build --push --platform linux/amd64,linux/arm64 --build-arg VERSION=${latest} -t ${image}:${latest} -t ${image}:latest .
  fi
 
 fi