fourth pass at ci

backend/task/Dockerfile

@@ -2,9 +2,9 @@ FROM rust:1.88.0
 
 WORKDIR /app
 
-COPY ./task ./task
-COPY ../cache ./cache
-COPY ../storage ./storage
+COPY ./task /app/task
+COPY ../cache /app/cache
+COPY ../storage /app/storage
 
 RUN mkdir /app/posts
 RUN cargo build --release --manifest-path ./task/Cargo.toml