diff --git a/.github/workflows/build-and-push-bskyweb-aws.yaml b/.github/workflows/build-and-push-bskyweb-aws.yaml
index c445ca2d..6eb9485b 100644
--- a/.github/workflows/build-and-push-bskyweb-aws.yaml
+++ b/.github/workflows/build-and-push-bskyweb-aws.yaml
@@ -43,6 +43,10 @@ jobs:
           tags: |
             type=sha,enable=true,priority=100,prefix=,suffix=,format=long
 
+      - name: Set outputs
+        id: vars
+        run: echo "sha_short=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
+
       - name: Build and push Docker image
         id: build-and-push
         uses: docker/build-push-action@v4
@@ -54,6 +58,5 @@ jobs:
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
-        env:
-          EXPO_PUBLIC_BUNDLE_IDENTIFIER: $(git rev-parse --short HEAD)
-          EXPO_PUBLIC_BUNDLE_DATE: $(date -u +"%y%m%d%H")
+          build-args: |
+            EXPO_PUBLIC_BUNDLE_IDENTIFIER=${{ steps.vars.outputs.sha_short }}
diff --git a/Dockerfile b/Dockerfile
index 568cbf7b..74106fd7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,6 +15,10 @@ ENV GOARCH="amd64"
 ENV CGO_ENABLED=1
 ENV GOEXPERIMENT="loopvar"
 
+# Expo
+ARG EXPO_PUBLIC_BUNDLE_IDENTIFIER
+ENV EXPO_PUBLIC_BUNDLE_IDENTIFIER ${EXPO_PUBLIC_BUNDLE_IDENTIFIER:-dev}
+
 COPY . .
 
 #
@@ -29,10 +33,13 @@ RUN mkdir --parents $NVM_DIR && \
 RUN \. "$NVM_DIR/nvm.sh" && \
   nvm install $NODE_VERSION && \
   nvm use $NODE_VERSION && \
+  echo "Using bundle identifier: $EXPO_PUBLIC_BUNDLE_IDENTIFIER" && \
+  echo "EXPO_PUBLIC_BUNDLE_IDENTIFIER=$EXPO_PUBLIC_BUNDLE_IDENTIFIER" >> .env && \
+  echo "EXPO_PUBLIC_BUNDLE_DATE=$(date -u +"%y%m%d%H")" >> .env && \
   npm install --global yarn && \
   yarn && \
   yarn intl:build && \
-  yarn build-web
+  EXPO_PUBLIC_BUNDLE_IDENTIFIER=$EXPO_PUBLIC_BUNDLE_IDENTIFIER EXPO_PUBLIC_BUNDLE_DATE=$() yarn build-web
 
 # DEBUG
 RUN find ./bskyweb/static && find ./web-build/static