diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 5b6bda79067a..5499361dd805 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -141,6 +141,7 @@ jobs:
       DEPOT_TOOLS_REPORT_BUILD: 0
       DEPOT_TOOLS_COLLECT_METRICS: 0
       DEPOT_TOOLS_METRICS: 0
+      IS_CI: 1
       SCCACHE: 1
       SCCACHE_GCS_BUCKET: cobalt-actions-sccache-linux
       SCCACHE_GCS_SERVICE_ACCOUNT: ${{ vars.SCCACHE_GCS_SERVICE_ACCOUNT }}
diff --git a/cobalt/docker/linux/Dockerfile b/cobalt/docker/linux/Dockerfile
index 2629cbb20fb2..1b22b9e8d430 100644
--- a/cobalt/docker/linux/Dockerfile
+++ b/cobalt/docker/linux/Dockerfile
@@ -33,9 +33,7 @@ RUN apt-get update && apt-get install -y \
 
 ADD files/sccache /usr/local/bin
 
-# TODO: b/379174067 - Move variables out of container.
 ENV SCCACHE_GCS_BUCKET=githubactions-chrome-sccache
 ENV SCCACHE_GCS_RW_MODE=READ_WRITE
 ENV SCCACHE_GCS_KEY_PATH=/root/key.json
 ENV SCCACHE_GCS_SERVICE_ACCOUNT=github-actions-bucket-access@cobalt-demo-330821.iam.gserviceaccount.com
-ENV IS_CI=1