diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 6fb1ed3..9be616e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -45,6 +45,12 @@ jobs:
             echo ::set-output name=tags::${TAGS}
             echo ::set-output name=build_args::${BUILD_ARGS}
             echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
+            
+      - name: Run Hadolint
+        uses: reviewdog/action-hadolint@v1
+        with:
+          github_token: ${{ secrets.github_token }}
+          reporter: github-pr-review
 
       - name: Build image
         uses: docker/build-push-action@v2
diff --git a/Dockerfile b/Dockerfile
index 7097389..fa7ae6e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,7 +11,7 @@ ENV PATH="/opt/miniconda3/bin:${PATH}"
 ENV PYSPARK_PYTHON="/opt/miniconda3/bin/python"
 
 RUN set -ex && \
-	apt-get update && \
+    apt-get update && \
     apt-get install -y curl bzip2 --no-install-recommends && \
     curl -s -L --url "https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh" --output /tmp/miniconda.sh && \
     bash /tmp/miniconda.sh -b -f -p "/opt/miniconda3" && \
@@ -30,7 +30,8 @@ RUN set -ex && \
     echo "spark.hadoop.fs.s3.impl=org.apache.hadoop.fs.s3a.S3AFileSystem" >> $SPARK_HOME/conf/spark-defaults.conf && \
     apt-get remove -y curl bzip2 && \
     apt-get autoremove -y && \
-    apt-get clean
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
 
 ENTRYPOINT ["spark-submit"]
 CMD ["--help"]