Fix apt command in CI

Author: Donaim

Dockerfile

@@ -45,8 +45,7 @@ RUN wget -qO rustup.sh https://sh.rustup.rs && \
     cargo install --root / --git https://github.com/jeff-k/merge-mates.git --rev 2fec61363f645e2008a4adff553d098beae21469
 
 ## Installing blast
-RUN apt-get install -q -y ncbi-blast+ && \
-    rm -rf /var/lib/apt/lists/*
+RUN apt-get install -q -y ncbi-blast+
 
 ## bowtie2
 RUN wget -q -O bowtie2.zip https://github.com/BenLangmead/bowtie2/releases/download/v2.2.8/bowtie2-2.2.8-linux-x86_64.zip && \