diff --git a/.hadolint.yaml b/.hadolint.yaml
index 8f7e23e..0464523 100644
--- a/.hadolint.yaml
+++ b/.hadolint.yaml
@@ -1,2 +1,2 @@
 ignored:
-  - DL3008
+  - DL3018
diff --git a/Dockerfile b/Dockerfile
index 2728365..dc767f0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,7 @@
-FROM ubuntu:18.04
+FROM alpine:3.10.2
 
-RUN apt-get update && apt-get install -y --no-install-recommends \
+RUN apk add --no-cache \
+    bash \
     git \
     openssh-client \
     ca-certificates && \