Updated to latest versions (#266)

Signed-off-by: Michael Käufl <dockerfiles@c.michael-kaeufl.de>
diff --git a/atom/Dockerfile b/atom/Dockerfile
index 841604b..cffef17 100644
--- a/atom/Dockerfile
+++ b/atom/Dockerfile
@@ -42,7 +42,7 @@
 	--no-install-recommends \
 	&& rm -rf /var/lib/apt/lists/*
 
-ENV ATOM_VERSION 1.16.0
+ENV ATOM_VERSION 1.17.0
 
 # download the source
 RUN buildDeps=' \
diff --git a/certbot/Dockerfile b/certbot/Dockerfile
index 24d3b60..393d41e 100644
--- a/certbot/Dockerfile
+++ b/certbot/Dockerfile
@@ -27,7 +27,7 @@
 
 RUN pip install acme
 
-ENV CERTBOT_VERSION 0.14.0
+ENV CERTBOT_VERSION 0.14.1
 
 RUN buildDeps=' \
 		git \
diff --git a/vagrant/Dockerfile b/vagrant/Dockerfile
index b915e35..35021dc 100644
--- a/vagrant/Dockerfile
+++ b/vagrant/Dockerfile
@@ -14,7 +14,7 @@
 	--no-install-recommends \
 	&& rm -rf /var/lib/apt/lists/*
 
-ENV	VAGRANT_VERSION 1.9.4
+ENV	VAGRANT_VERSION 1.9.5
 
 ADD	https://releases.hashicorp.com/vagrant/${VAGRANT_VERSION}/vagrant_${VAGRANT_VERSION}_x86_64.deb /src/vagrant_${VAGRANT_VERSION}_x86_64.deb
 
diff --git a/vault/Dockerfile b/vault/Dockerfile
index 3196aa8..ebcf6a8 100644
--- a/vault/Dockerfile
+++ b/vault/Dockerfile
@@ -7,7 +7,7 @@
 RUN	apk --no-cache add \
 	ca-certificates
 
-ENV VAULT_VERSION v0.6.5
+ENV VAULT_VERSION v0.7.2
 
 RUN buildDeps=' \
 		bash \