Disable checksum verification for docker bin

Author: cybertk

Dockerfile

@@ -31,11 +31,9 @@ ADD gitlab-CA.crt /usr/local/share/ca-certificates/
 RUN update-ca-certificates
 
 # Install docker-cli
-# See https://github.com/docker-library/docker/blob/bb15fc25bbd4f51a880cf02f91eab447b1083b75/1.8/Dockerfile
+# See https://github.com/docker/docker/releases
 ENV DOCKER_BUCKET get.docker.com
-ENV DOCKER_SHA256 97a3f5924b0b831a310efa8bf0a4c91956cd6387c4a8667d27e2b2dd3da67e4d
 RUN curl -fSL "https://${DOCKER_BUCKET}/builds/Linux/x86_64/docker-$DOCKER_VERSION" -o /usr/local/bin/docker && \
-    echo "${DOCKER_SHA256}  /usr/local/bin/docker" | sha256sum -c - && \
     chmod +x /usr/local/bin/docker
 
 # Install ruby and sass