Build linux/amd64 image (#383)

Updates the default build options to build linux/amd64.

Fixes #378

build/build-container.sh

@@ -5,14 +5,18 @@ set -ex
 SCRIPT_ROOT=$(dirname $(readlink -f $0))
 PROJECT_ROOT=$(dirname ${SCRIPT_ROOT})
 
-IMAGE_TAG=$(git describe --tags --always --dirty)
+OS=linux
+ARCH=amd64
+
+IMAGE_TAG=${OS}-${ARCH}-$(git describe --tags --always --dirty)
 IMAGE_NAME=alcionai/corso:${IMAGE_TAG}
 
 ${SCRIPT_ROOT}/build.sh
 
 echo "building container"
-docker build -t ${IMAGE_NAME}            \
-       -f ${PROJECT_ROOT}/Dockerfile     \
+docker buildx --tag ${IMAGE_NAME}         \
+       --platform ${OS}/${ARCH}           \
+       --file ${PROJECT_ROOT}/Dockerfile  \
        ${PROJECT_ROOT}
 
 echo "container built successfully ${IMAGE_NAME}"

build/build.sh

@@ -10,6 +10,9 @@ CORSO_BUILD_ARGS=''
 CORSO_BUILD_CONTAINER_DIR=/go/src/github.com/alcionai/corso
 CORSO_BUILD_CONTAINER_SRC_DIR=${CORSO_BUILD_CONTAINER_DIR}/src
 
+GOOS=linux
+GOARCH=amd64
+
 # temporary directory for caching go build
 mkdir -p /tmp/.corsobuild/cache
 # temporary directory for caching go modules (needed for fast cross-platform build)
@@ -21,6 +24,9 @@ docker run --rm --mount type=bind,src=${SRC_DIR},dst=${CORSO_BUILD_CONTAINER_DIR
        --mount type=bind,src=/tmp/.corsobuild/mod,dst=/go/pkg/mod                    \
        --workdir ${CORSO_BUILD_CONTAINER_SRC_DIR}                                    \
        --env GOCACHE=/tmp/.corsobuild/cache                                          \
+       --env GOOS=${GOOS}                                                            \
+       --env GOARCH=${GOARCH}                                                        \
+       --env GOCACHE=/tmp/.corsobuild/cache                                          \
        --entrypoint /usr/local/go/bin/go                                             \
        golang:1.18                                                                   \
        build ${CORSO_BUILD_ARGS}