CI: remove squash and fix buildah push (#7841)

substrate/.gitlab-ci.yml

@@ -502,20 +502,17 @@ build-rust-doc:
     - echo "${PRODUCT} version = ${VERSION}"
     - test -z "${VERSION}" && exit 1
     - buildah bud
-      --squash
-      --format=docker
-      --build-arg VCS_REF="${CI_COMMIT_SHA}"
-      --build-arg BUILD_DATE="$(date -u '+%Y-%m-%dT%H:%M:%SZ')"
-      --tag "$IMAGE_NAME:$VERSION"
-      --tag "$IMAGE_NAME:latest"
-      --file "$DOCKERFILE" .
+        --format=docker
+        --build-arg VCS_REF="${CI_COMMIT_SHA}"
+        --build-arg BUILD_DATE="$(date -u '+%Y-%m-%dT%H:%M:%SZ')"
+        --tag "$IMAGE_NAME:$VERSION"
+        --tag "$IMAGE_NAME:latest"
+        --file "$DOCKERFILE" .
     - echo "$Docker_Hub_Pass_Parity" |
       buildah login --username "$Docker_Hub_User_Parity" --password-stdin docker.io
     - buildah info
-    - buildah push
-      --format=v2s2
-      "$IMAGE_NAME:$VERSION"
-      "$IMAGE_NAME:latest"
+    - buildah push --format=v2s2 "$IMAGE_NAME:$VERSION"
+    - buildah push --format=v2s2 "$IMAGE_NAME:latest"
 
 publish-docker-substrate:
   stage:                           publish