Set GitLab registry docker tags to match dockerhub

.gitlab-ci.yml

@@ -178,7 +178,7 @@ build:docker:next:
   rules:
     - if: '$CI_COMMIT_BRANCH == "next"'
   variables:
-    GL_IMAGE_TAG: "$CI_REGISTRY_IMAGE/conduit:next"
+    GL_IMAGE_TAG: "$CI_REGISTRY_IMAGE/matrix-conduit:next"
     DH_IMAGE_TAG: "$DOCKER_HUB_IMAGE/matrixconduit/matrix-conduit:next"
 
 build:docker:master:
@@ -186,7 +186,7 @@ build:docker:master:
   rules:
     - if: '$CI_COMMIT_BRANCH == "master"'
   variables:
-    GL_IMAGE_TAG: "$CI_REGISTRY_IMAGE/conduit:latest"
+    GL_IMAGE_TAG: "$CI_REGISTRY_IMAGE/matrix-conduit:latest"
     DH_IMAGE_TAG: "$DOCKER_HUB_IMAGE/matrixconduit/matrix-conduit:latest"
 
 ## Build a docker image by packaging up the x86_64-unknown-linux-musl binary into an alpine image