diff --git a/docker/gitlab/17/debian12/17.5/Dockerfile b/docker/gitlab/17/debian12/17.5/Dockerfile
index 4a07d4637d..0ffe871673 100644
--- a/docker/gitlab/17/debian12/17.5/Dockerfile
+++ b/docker/gitlab/17/debian12/17.5/Dockerfile
@@ -3,9 +3,9 @@ FROM marketplace.gcr.io/google/debian12
 ENV GITLAB_VERSION 17.5.1
 ENV DOWNLOAD_URL "https://packages.gitlab.com/gitlab/gitlab-ee/packages/debian/bullseye/gitlab-ee_17.5.1-ee.0_amd64.deb/download.deb"
 
-ENV C2D_RELEASE 17.5.1
+ENV C2D_RELEASE=17.5.1
 
-SHELL ["/bin/sh", "-c"],
+SHELL ["/bin/sh", "-c"]
 
 # Default to supporting utf-8
 ENV LANG C.UTF-8
diff --git a/docker/gitlab/templates/Dockerfile.template b/docker/gitlab/templates/Dockerfile.template
index d5514c7198..f1340d2c88 100644
--- a/docker/gitlab/templates/Dockerfile.template
+++ b/docker/gitlab/templates/Dockerfile.template
@@ -5,9 +5,9 @@ FROM {{ .From }}
 ENV GITLAB_VERSION {{ $gitlab.Version }}
 ENV DOWNLOAD_URL "https://packages.gitlab.com/gitlab/gitlab-ee/packages/debian/bullseye/gitlab-ee_{{ $gitlab.Version }}-ee.0_amd64.deb/download.deb"
 
-ENV C2D_RELEASE {{ $gitlab.Version }}
+ENV C2D_RELEASE={{ $gitlab.Version }}
 
-SHELL ["/bin/sh", "-c"],
+SHELL ["/bin/sh", "-c"]
 
 # Default to supporting utf-8
 ENV LANG C.UTF-8