Add relay

ap-relay/Dockerfile.arm64v8

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+FROM arm64v8/rust:1.42.0-buster AS builder
+
+# Set up git remote
+ARG TAG
+ARG GIT_REPOSITORY
+ARG BUILD_DATE
+
+ARG UID=991
+ARG GID=991
+
+RUN git clone -b ${TAG} ${GIT_REPOSITORY} /opt/relay
+WORKDIR /opt/relay
+RUN cargo install --path .
+
+FROM arm64v8/ubuntu:19.10
+
+RUN \
+ apt-get update && \
+ apt-get upgrade -y
+
+RUN \
+ addgroup --gid "$GID" relay && \
+ adduser \
+    --disabled-password \
+    --gecos "" \
+    --ingroup relay \
+    --uid "$UID" \
+    relay
+
+COPY --from=builder /usr/local/cargo/bin/ap-actix /usr/local/bin/relay
+
+USER relay
+
+CMD ["relay"]

ap-relay/build.sh

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+#!/usr/bin//env bash
+
+DEFAULT_TAG=master
+DEFAULT_REPOSITORY=https://git.asonix.dog/asonix/ap-relay
+
+BUILD_DATE=$(date)
+VERSION=$1
+TAG=${2:-$DEFAULT_TAG}
+GIT_REPOSITORY=${3:-$DEFAULT_REPOSITORY}
+
+function require() {
+    if [ "$1" = "" ]; then
+        echo "input '$2' required"
+        print_help
+        exit 1
+    fi
+}
+
+function print_help() {
+    echo "build.sh"
+    echo ""
+    echo "Usage:"
+    echo "	build.sh [version] [tag] [repository]"
+    echo ""
+    echo "Args:"
+    echo "	version: The version of the current container"
+    echo "	tag: The tag or branch of the relay to include (optional, defaults to asonix/downstream)"
+    echo "	repository: The git repository to fetch the relay from (optional, defaults to https://git.asonix.dog/asonix/ap-relay)"
+}
+
+function build_image() {
+    IMAGE=$1
+    ARCH=$2
+
+    docker build \
+        --pull \
+        --no-cache \
+        --build-arg BUILD_DATE="${BUILD_DATE}" \
+        --build-arg TAG="${TAG}" \
+        --build-arg VERSION="${VERSION}" \
+        --build-arg GIT_REPOSITORY="${GIT_REPOSITORY}" \
+        -f "Dockerfile.${ARCH}" \
+        -t "${IMAGE}:$(echo ${TAG} | sed 's/\//-/g')-${VERSION}-${ARCH}" \
+        -t "${IMAGE}:latest-${ARCH}" \
+        -t "${IMAGE}:latest" \
+        .
+
+    docker push "${IMAGE}:$(echo ${TAG} | sed 's/\//-/g')-${VERSION}-${ARCH}"
+    docker push "${IMAGE}:latest-${ARCH}"
+    docker push "${IMAGE}:latest"
+}
+
+require "$VERSION" "version"
+
+set -xe
+
+build_image asonix/relay arm64v8