Dockerfile: Set to arm64v8 version

Signed-off-by: Yang Deokgyu <secugyu@gmail.com>

Dockerfile

@@ -18,7 +18,16 @@
 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 # IN THE SOFTWARE.
 
-FROM python:3.6.8-alpine3.9
+# amd64 base image
+FROM alpine:latest AS builder
+LABEL maintainer="Yang Deokgyu <secugyu@gmail.com>" \
+      description="A Material for MkDocs port for arm64v8 platform."
+
+# To set multiarch build for Docker hub automated build.
+RUN apk add curl
+RUN curl -L https://github.com/balena-io/qemu/releases/download/v3.0.0%2Bresin/qemu-3.0.0+resin-aarch64.tar.gz | tar zxvf - -C . && mv qemu-3.0.0+resin-aarch64/qemu-aarch64-static .
+FROM arm64v8/python:3.6-alpine3.9
+COPY --from=builder qemu-aarch64-static /usr/bin/
 
 # Set build directory
 WORKDIR /tmp

hooks/build

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+docker build \
+    --file "${DOCKERFILE_PATH}" \
+    --build-arg BUILD_DATE="$(date -u +"%Y-%m-%dT%H:%M:%SZ")" \
+    --build-arg VCS_REF="$(git rev-parse --short HEAD)" \
+    --tag "$IMAGE_NAME" \
+    .

hooks/post_checkout

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+BUILD_ARCH=$(echo "${DOCKERFILE_PATH}" | cut -d '.' -f 2)
+
+[ "${BUILD_ARCH}" == "Dockerfile" ] && \
+    { echo 'qemu-user-static: Download not required for current arch'; exit 0; }
+
+QEMU_USER_STATIC_ARCH=$([ "${BUILD_ARCH}" == "armhf" ] && echo "${BUILD_ARCH::-2}" || echo "${BUILD_ARCH}")
+QEMU_USER_STATIC_DOWNLOAD_URL="https://github.com/multiarch/qemu-user-static/releases/download"
+QEMU_USER_STATIC_LATEST_TAG=$(curl -s https://api.github.com/repos/multiarch/qemu-user-static/tags \
+    | grep 'name.*v[0-9]' \
+    | head -n 1 \
+    | cut -d '"' -f 4)
+
+curl -SL "${QEMU_USER_STATIC_DOWNLOAD_URL}/${QEMU_USER_STATIC_LATEST_TAG}/x86_64_qemu-${QEMU_USER_STATIC_ARCH}-static.tar.gz" \
+    | tar xzv

hooks/pre_build

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+BUILD_ARCH=$(echo "${DOCKERFILE_PATH}" | cut -d '.' -f 2)
+
+[ "${BUILD_ARCH}" == "Dockerfile" ] && \
+    { echo 'qemu-user-static: Registration not required for current arch'; exit 0; }
+
+docker run --rm --privileged multiarch/qemu-user-static:register --reset