fixing github build

Author: perfetti

bin/build_github.sh

@@ -1,4 +1,12 @@
 #!/bin/bash
+if [ ! -f .env ]; then
+  export FRONTEND_BUILD_CONTEXT="https://${GH_TOKEN}@${FRONTEND_REPO_URL}#${FRONTEND_REF}"
+  export API_BUILD_CONTEXT="https://${GH_TOKEN}@${API_REPO_URL}#${API_REF}"
+  export BACKEND_BUILD_CONTEXT="https://${GH_TOKEN}@${BACKEND_REPO_URL}#${BACKEND_REF}"
+  echo "FRONTEND_BUILD_CONTEXT=${FRONTEND_BUILD_CONTEXT}" >> .env
+  echo "API_BUILD_CONTEXT=${API_BUILD_CONTEXT}" >> .env
+  echo "BACKEND_BUILD_CONTEXT=${BACKEND_BUILD_CONTEXT}" >> .env
+fi
 
 source .env