from saltstack/ubuntu-14.04-minimal
MAINTAINER SaltStack, Inc.

# Upgrade System and Install dependencies
RUN apt-get update && \
  apt-get upgrade -y -o DPkg::Options::=--force-confold && \
  apt-get install -y -o DPkg::Options::=--force-confold curl

# Install Latest Salt from the Develop Branch
RUN curl -L https://bootstrap.saltstack.org | sh -s -- -X git develop

from saltstack/ubuntu-14.04-minimal
MAINTAINER SaltStack, Inc.

# Upgrade System and Install dependencies
RUN apt-get update && \
  apt-get upgrade -y -o DPkg::Options::=--force-confold && \
  apt-get install -y -o DPkg::Options::=--force-confold curl

# Install Latest Salt from the Develop Branch
RUN curl -L https://bootstrap.saltstack.com | sh -s -- -X git develop

Fix bootstrap file reference; old link is broken
Fix bootstrap file reference; old link is broken

$ curl -IL https://bootstrap.saltstack.org 
curl: (7) Failed to connect to bootstrap.saltstack.org port 443: Connection refused
$ curl -IL https://bootstrap.saltstack.com
HTTP/1.1 302 Moved Temporarily
...

This change probably needs to be applied to other Dockerfiles as well.