Dockerfile.aarch64/armhf hooks - update the crossbuild method

Author: David Personette

Dockerfile.aarch64

@@ -1,8 +1,8 @@
-FROM balenalib/aarch64-alpine
+FROM arm64v8/alpine
+COPY qemu-aarch64-static /usr/bin/
 MAINTAINER David Personette <[email protected]>
 
 # Install transmission
-RUN ["cross-build-start"]
 RUN apk --no-cache --no-progress upgrade && \
     apk --no-cache --no-progress add bash curl shadow sed tini \
                 transmission-daemon tzdata && \
@@ -37,7 +37,6 @@ RUN apk --no-cache --no-progress upgrade && \
     /bin/echo -e '    "upload-limit-enabled": 0\n}' >>$file && \
     chown -Rh transmission. $dir && \
     rm -rf /tmp/*
-RUN ["cross-build-end"]
 
 COPY transmission.sh /usr/bin/
 

Dockerfile.armhf

@@ -1,8 +1,8 @@
-FROM balenalib/armv7hf-alpine
+FROM arm32v6/alpine
+COPY qemu-arm-static /usr/bin/
 MAINTAINER David Personette <[email protected]>
 
 # Install transmission
-RUN ["cross-build-start"]
 RUN apk --no-cache --no-progress upgrade && \
     apk --no-cache --no-progress add bash curl shadow sed tini \
                 transmission-daemon tzdata && \
@@ -37,7 +37,6 @@ RUN apk --no-cache --no-progress upgrade && \
     /bin/echo -e '    "upload-limit-enabled": 0\n}' >>$file && \
     chown -Rh transmission. $dir && \
     rm -rf /tmp/*
-RUN ["cross-build-end"]
 
 COPY transmission.sh /usr/bin/
 

hooks/post_checkout

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+[[ "${DOCKER_TAG}" == "latest" ]] && \
+    { echo 'qemu-user-static: Download not required for this arch'; exit 0; }
+
+TAGS_API="https://api.github.com/repos/multiarch/qemu-user-static/tags"
+URL="https://github.com/multiarch/qemu-user-static/releases/download"
+LATEST_TAG=$(curl -Ls $TAGS_API | \
+            awk -F'"' '/name.*v[0-9]/ {print $4; exit}')
+ARCH=$([[ "${DOCKER_TAG}" == "armhf" ]] && \
+            echo "${DOCKER_TAG::-2}" || echo "${DOCKER_TAG}")
+
+curl -Ls "${URL}/${LATEST_TAG}/x86_64_qemu-${ARCH}-static.tar.gz" | \
+            tar xzv

hooks/pre_build

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+[[ "${DOCKER_TAG}" == "latest" ]] && \
+    { echo 'qemu-user-static: Registration not required for this arch';exit 0; }
+
+docker run --rm --privileged multiarch/qemu-user-static:register --reset