Provide missing build-args to docker build

.gitlab-ci.yml

@@ -158,7 +158,17 @@ build:debug:cargo:x86_64-unknown-linux-musl:
     - mkdir -p linux/arm/ && mv ./conduit-armv7-unknown-linux-musleabihf linux/arm/v7
     - mkdir -p linux/arm64/ && mv ./conduit-aarch64-unknown-linux-musl linux/arm64/v8
     # Actually create multiarch image:
-    - docker buildx build --pull --push --platform "$PLATFORMS" --tag "$GL_IMAGE_TAG" --tag "$GL_IMAGE_TAG-commit-$CI_COMMIT_SHORT_SHA" --file "$DOCKER_FILE" .
+    - >
+      docker buildx build
+      --pull
+      --push
+      --build-arg CREATED=$(date -u +'%Y-%m-%dT%H:%M:%SZ')
+      --build-arg VERSION=$(grep -m1 -o '[0-9].[0-9].[0-9]' Cargo.toml)
+      --build-arg "GIT_REF=$CI_COMMIT_SHORT_SHA"
+      --platform "$PLATFORMS"
+      --tag "$GL_IMAGE_TAG"
+      --tag "$GL_IMAGE_TAG-commit-$CI_COMMIT_SHORT_SHA"
+      --file "$DOCKER_FILE" .
     # Only try to push to docker hub, if auth data for dockerhub exists:
     - if [ -n "${DOCKER_HUB}" ]; then docker push "$DH_IMAGE_TAG"; fi
     - if [ -n "${DOCKER_HUB}" ]; then docker push "$DH_IMAGE_TAG-commit-$CI_COMMIT_SHORT_SHA"; fi