remove entrypoint from ec2 image

docker/Dockerfile.ec2.linux.amd64

@@ -25,8 +25,6 @@ ENV PIP_PACKAGES="\
     pycrypto \
 "
 
-COPY ./ec2-entrypoint.sh /docker-entrypoint.sh
-
 RUN \
     apk update \
     && apk add --update --no-cache ${PACKAGES} \
@@ -38,4 +36,3 @@ RUN \
     && chmod 700 /root/.ssh
 
 USER root
-ENTRYPOINT ["/docker-entrypoint.sh"]

ec2-entrypoint.sh

@@ -1,10 +0,0 @@
-#!/usr/bin/env bash
-set -o pipefail
-set -o errtrace
-set -o nounset
-set -o errexit
-
-if [ "$EC2_SSH_KEY" ]; then
-    echo "$EC2_SSH_KEY" > $HOME/.ssh/ec2_key
-    chmod 600 $HOME/.ssh/ec2_key
-fi