Use build arg in docker action to correctly pass git commit SHA (#3940)

* use env variables through docker args

* remove quotes

* use an output instead

* try that again

* write the variables to .env

* rm unused

* use short sha

* remove test branch

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