diff --git a/.github/workflows/docker-build.yaml b/.github/workflows/docker-build.yaml
index fbd2ab83..26c46be6 100644
--- a/.github/workflows/docker-build.yaml
+++ b/.github/workflows/docker-build.yaml
@@ -95,6 +95,8 @@ jobs:
           fi
           echo "DOCKER_TAG=$DOCKER_TAG" >> $GITHUB_ENV
           echo "GIT_SHORT_HASH=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
+          echo "GIT_BRANCH=$GITHUB_REF_NAME" >> $GITHUB_ENV
+          echo "GIT_HASH=$GITHUB_SHA" >> $GITHUB_ENV
 
       - name: Build containers
         run: |
@@ -108,9 +110,9 @@ jobs:
               --output "type=image,push=true" \
               --build-arg "PI_VERSION=${{ matrix.board }}" \
               --build-arg "BUILD_DATE=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" \
-              --build-arg "GIT_HASH=$GITHUB_SHA" \
+              --build-arg "GIT_HASH=$GITHUB_HASH" \
               --build-arg "GIT_SHORT_HASH=$GIT_SHORT_HASH" \
-              --build-arg "GIT_BRANCH=$GITHUB_REF_NAME" \
+              --build-arg "GIT_BRANCH=$GITHUB_BRANCH" \
               --cache-from "type=local,src=/tmp/.buildx-cache" \
               --cache-from "type=registry,ref=screenly/srly-ose-$container:$DOCKER_TAG" \
               --cache-to "type=local,dest=/tmp/.buildx-cache" \
diff --git a/bin/build_containers.sh b/bin/build_containers.sh
index c4c097b8..a6c23583 100755
--- a/bin/build_containers.sh
+++ b/bin/build_containers.sh
@@ -34,6 +34,9 @@ fi
 export BASE_IMAGE_TAG=buster
 export DEBIAN_VERSION=buster
 export QT_VERSION=5.15.2
+export GIT_SHORT_HASH="$(git rev-parse --short HEAD)"
+export GIT_BRANCH="$(git rev-parse --abbrev-ref HEAD)"
+export GIT_HASH="$(git rev-parse HEAD)"
 export WEBVIEW_GIT_HASH=0b6d49359133246659b9ba1d8dd883e3fc5c9a91
 export WEBVIEW_BASE_URL="https://github.com/Screenly/Anthias/releases/download/WebView-v0.2.1"
 
@@ -60,8 +63,8 @@ for pi_version in pi4 pi3 pi2 pi1; do
 
         docker "${DOCKER_BUILD_ARGS[@]}" \
             --build-arg "GIT_HASH=$GIT_HASH" \
-            --build-arg "GIT_SHORT_HASH=$GIT_SHORT_HASH" \
             --build-arg "GIT_BRANCH=$GIT_BRANCH" \
+            --build-arg "GIT_SHORT_HASH=$GIT_SHORT_HASH" \
             --build-arg "PI_VERSION=$pi_version" \
             --cache-from "type=local,src=/tmp/.buildx-cache" \
             --cache-from "type=registry,ref=screenly/srly-ose-$container:$DOCKER_TAG" \
diff --git a/docker/Dockerfile.redis.tmpl b/docker/Dockerfile.redis.tmpl
index 987772a7..e251d6f7 100644
--- a/docker/Dockerfile.redis.tmpl
+++ b/docker/Dockerfile.redis.tmpl
@@ -1,9 +1,9 @@
 FROM ${BASE_IMAGE}:${BASE_IMAGE_TAG}
 
-RUN apt-get update && \
+RUN --mount=type=cache,target=/var/cache/apt \
+    apt-get update && \
     apt-get -y install --no-install-recommends \
-    redis-server && \
-    apt-get clean
+    redis-server
 
 ARG GIT_HASH
 ENV GIT_HASH=$GIT_HASH