diff --git a/Dockerfile b/Dockerfile
index f07a188..f6accfe 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,8 +6,11 @@ ENV ALPINE_MIRROR https://uk.alpinelinux.org/alpine/v${ALPINE_SERIES}
 ENV ALPINE_ARCH x86_64
 
 WORKDIR /root
-RUN set -x; apk add --no-cache curl &&\
+RUN set -xo pipefail; apk add --no-cache curl gnupg &&\
   curl -LO ${ALPINE_MIRROR}/releases/${ALPINE_ARCH}/alpine-minirootfs-${VERSION}-${ALPINE_ARCH}.tar.gz &&\
+  curl -LO ${ALPINE_MIRROR}/releases/${ALPINE_ARCH}/alpine-minirootfs-${VERSION}-${ALPINE_ARCH}.tar.gz.asc &&\
+  gpg --recv 0482D84022F52DF1C4E7CD43293ACD0907D9495A &&\
+  gpg --verify alpine-minirootfs-${VERSION}-${ALPINE_ARCH}.tar.gz.asc alpine-minirootfs-${VERSION}-${ALPINE_ARCH}.tar.gz &&\
   mkdir /dest &&\
   tar -C /dest -xvzf alpine-minirootfs-${VERSION}-${ALPINE_ARCH}.tar.gz &&\
   sed -i "s#http://dl-cdn.alpinelinux.org/alpine/v${ALPINE_SERIES}#${ALPINE_MIRROR}#g" /dest/etc/apk/repositories