support linux/arm64/v8 builds

Dockerfile

@@ -2,38 +2,37 @@
 #
 # This file is part of alpine-sqs which is released under the GPLv3.
 # See https://github.com/roribio/alpine-sqs for details.
+ARG ARCH
 
-FROM appropriate/curl as Builder
-
-ARG jq_version=1.5
+FROM alpine:3.13 as builder
 
 WORKDIR /tmp/sqs-alpine
 
 RUN \
-  apk add --update git \
-  && rm -rf /var/cache/apk/* \
+  apk add --no-cache \
+    curl \
+    git \
+    jq \
   && git clone --verbose --depth=1 https://github.com/kobim/sqs-insight.git \
-  && curl -L -o /usr/local/bin/jq https://github.com/stedolan/jq/releases/download/jq-${jq_version}/jq-linux64 \
-  && chmod +x /usr/local/bin/jq \
   && export elasticmq_version=$(curl -sL https://api.github.com/repos/adamw/elasticmq/releases/latest | jq -r .tag_name) \
   && elasticmq_version=${elasticmq_version//v} \
-  && curl -LO https://s3-eu-west-1.amazonaws.com/softwaremill-public/elasticmq-server-${elasticmq_version}.jar \
+  && curl -sLO https://s3-eu-west-1.amazonaws.com/softwaremill-public/elasticmq-server-${elasticmq_version}.jar \
   && mv elasticmq-server-${elasticmq_version}.jar elasticmq-server.jar
 
-FROM anapsix/alpine-java:8
+FROM ${ARCH}/openjdk:8-alpine
+
 LABEL maintainer="Ronald E. Oribio R. https://github.com/roribio"
 
-COPY --from=Builder /tmp/sqs-alpine/ /opt/
+COPY --from=builder /tmp/sqs-alpine/ /opt/
 COPY etc/ /etc/
 COPY opt/ /opt/
 
 RUN \
-  apk add --update \
+  apk add --no-cache \
     nodejs \
     nodejs-npm \
     supervisor \
     libtasn1=4.14-r0 \
-  && apk upgrade musl \
   && rm -rf \
     /var/cache/apk/* \
     /etc/supervisord.conf \