add tmp dir for cache

Dockerfile

@@ -16,7 +16,7 @@ EXPOSE 8080
 
 ADD  ./entrypoint.sh /entrypoint.sh
 
-RUN mkdir /build \
+RUN mkdir -p /build \
 &&  apk --no-cache add tini pcre-dev sqlite-dev \
 &&  rm -rf /var/cache/apk/*
 

entrypoint.sh

@@ -9,6 +9,7 @@ WORKD=/data
 build_working_dir() {
     [ -f $WORKD/nitter.conf ] || cp -f  $BUILD/nitter.conf $WORKD/.
     [ -d $WORKD/public ]      || cp -rf $BUILD/public      $WORKD/.
+    [ -d $WORKD/tmp ]         || mkdir -p $WOKRD/tmp
 }
 
 # -- program starts