Possible fix for multi-arch build failures (#15)

Enables buildx in an attempt to resolve issue #14
Also removes ryuk overrides as the issue has since been resolved

build-bin/docker/configure_docker

@@ -24,13 +24,8 @@ set -ue
 # * See https://www.testcontainers.org/supported_docker_environment/image_registry_rate_limiting/
 # * checks.disable=true - saves time and a docker.io pull of alpine
 echo checks.disable=true >> ~/.testcontainers.properties
-# * change ryuk to ghcr.io until: https://github.com/testcontainers/moby-ryuk/issues/15 and 16
-echo ryuk.container.image=ghcr.io/openzipkin/testcontainers-ryuk:latest >> ~/.testcontainers.properties
 
 # We don't use any docker.io images, but add a Google's mirror in case something implicitly does
 # * See https://cloud.google.com/container-registry/docs/pulling-cached-images
 echo '{ "registry-mirrors": ["https://mirror.gcr.io"] }' | sudo tee /etc/docker/daemon.json
 sudo service docker restart
-
-# * Ensure buildx and related features are disabled
-mkdir -p ${HOME}/.docker && echo '{"experimental":"disabled"}' > ${HOME}/.docker/config.json

build-bin/docker/docker_build

@@ -19,9 +19,5 @@ docker_tag=${1?full docker_tag is required. Ex openzipkin/zipkin:test}
 version=${2:-}
 docker_args=$($(dirname "$0")/docker_args ${version})
 
-# Avoid buildx on load for reasons including:
-#  * Caching is more complex as builder instances must be considered
-#  * It only supports one platform/arch on load https://github.com/docker/buildx/issues/59
-#  * It would pull Docker Hub for moby/buildkit or multiarch/qemu-user-static images, using up quota
 echo "Building image ${docker_tag}"
-DOCKER_BUILDKIT=0 docker build --pull ${docker_args} --tag ${docker_tag} .
+DOCKER_BUILDKIT=1 docker build --pull ${docker_args} --tag ${docker_tag} .

build-bin/docker/docker_push

@@ -27,7 +27,7 @@ set -ue
 
 docker_image=${1?docker_image is required, notably without a tag. Ex openzipkin/zipkin}
 version=${2:-master}
-export DOCKER_BUILDKIT=0
+export DOCKER_BUILDKIT=1
 
 case ${version} in
   master )