diff --git a/Dockerfile b/Dockerfile
index e9b8aee..3d20562 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,10 +10,9 @@ ENV MORTY_VERSION="f56efbfca411605bc7a2b5cc8fcad91df537a597"
 
 WORKDIR $GOPATH/src/github.com/asciimoo/morty
 
-RUN apk update && apk upgrade && \
-    apk add --no-cache git="2.26.2-r0" && \
-    git clone https://github.com/asciimoo/morty.git . && \
-    git checkout "${MORTY_VERSION}"
+RUN apk add --no-cache git="2.26.2-r0" \
+  && git clone https://github.com/asciimoo/morty.git . \
+  && git checkout "${MORTY_VERSION}"
 
 RUN go get -d -v && gofmt -l ./ && go build .
 
@@ -23,10 +22,9 @@ FROM arm32v7/alpine:3.12.3@sha256:299294be8699c1b323c137f972fd0aa5eaa4b95489c213
 FROM arm64v8/alpine:3.12.3@sha256:549694ea68340c26d1d85c00039aa11ad835be279bfd475ff4284b705f92c24e AS base-arm64
 FROM base-${ARCH}
 
-RUN apk update && apk upgrade && \
-    apk --no-cache add ca-certificates="20191127-r4" && \
-    rm -f /var/cache/apk/* && \
-    adduser -D -h /usr/local/morty -s /bin/false morty morty
+RUN apk --no-cache add ca-certificates="20191127-r4" \
+ && rm -f /var/cache/apk/* \
+ && adduser -D -h /usr/local/morty -s /bin/false morty morty
 
 COPY --from=builder /go/src/github.com/asciimoo/morty/morty /usr/local/morty/morty