http:// -> https://

Signed-off-by: Jess Frazelle <acidburn@google.com>
diff --git a/atom/Dockerfile b/atom/Dockerfile
index 4289772..cf72e6c 100644
--- a/atom/Dockerfile
+++ b/atom/Dockerfile
@@ -9,7 +9,7 @@
 #	Tested on Debian Jessie.
 # USAGE:
 #	# Download atom Dockerfile
-#	wget http://raw.githubusercontent.com/jessfraz/dockerfiles/master/atom/Dockerfile
+#	wget https://raw.githubusercontent.com/jessfraz/dockerfiles/master/atom/Dockerfile
 #
 #	# Build atom image
 #	docker build -t atom .
diff --git a/buttslock/buttslock.py b/buttslock/buttslock.py
index 126ed4c..72d6f8e 100755
--- a/buttslock/buttslock.py
+++ b/buttslock/buttslock.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 
 # Shamelessly pasted from:
-# http://serverfault.com/questions/573379/system-suspend-dbus-upower-signals-are-not-seen
+# https://serverfault.com/questions/573379/system-suspend-dbus-upower-signals-are-not-seen
 
 from datetime import datetime
 import dbus
diff --git a/buttslock/buttslock.sh b/buttslock/buttslock.sh
index 7c780e9..13eba24 100755
--- a/buttslock/buttslock.sh
+++ b/buttslock/buttslock.sh
@@ -3,7 +3,7 @@
 # Shamelessly copied from:
 # https://github.com/meskarune/i3lock-fancy
 
-# All options are here: http://www.imagemagick.org/Usage/blur/#blur_args
+# All options are here: https://www.imagemagick.org/Usage/blur/#blur_args
 #BLURTYPE="0x5" # 7.52s
 #BLURTYPE="0x2" # 4.39s
 #BLURTYPE="5x3" # 3.80s
diff --git a/checkup/Dockerfile b/checkup/Dockerfile
index 8d77741..404430c 100644
--- a/checkup/Dockerfile
+++ b/checkup/Dockerfile
@@ -18,7 +18,7 @@
 	' \
 	set -x \
 	&& apk update \
-	&& apk add --no-cache --repository http://dl-3.alpinelinux.org/alpine/edge/community $buildDeps \
+	&& apk add --no-cache --repository https://dl-3.alpinelinux.org/alpine/edge/community $buildDeps \
 	&& go get github.com/sourcegraph/checkup/cmd/checkup \
 	&& cp /go/bin/checkup /usr/bin/checkup \
 	&& apk del $buildDeps \
diff --git a/chromium/Dockerfile b/chromium/Dockerfile
index 0472faa..ec48d43 100644
--- a/chromium/Dockerfile
+++ b/chromium/Dockerfile
@@ -6,7 +6,7 @@
 #	Tested on Debian Jessie
 # USAGE:
 #	# Download Chromium Dockerfile
-#	wget http://raw.githubusercontent.com/jessfraz/dockerfiles/master/chromium/Dockerfile
+#	wget https://raw.githubusercontent.com/jessfraz/dockerfiles/master/chromium/Dockerfile
 #
 #	# Build chromium image
 #	docker build -t chromium .
diff --git a/doctor/Dockerfile b/doctor/Dockerfile
index 79c7854..b79c54d 100644
--- a/doctor/Dockerfile
+++ b/doctor/Dockerfile
@@ -6,7 +6,7 @@
 #	Tested on Debian Jessie
 # USAGE:
 #	# Download doctor Dockerfile
-#	wget http://raw.githubusercontent.com/jessfraz/dockerfiles/master/doctor/Dockerfile
+#	wget https://raw.githubusercontent.com/jessfraz/dockerfiles/master/doctor/Dockerfile
 #
 #	# Build doctor image
 #	docker build -t doctor .
@@ -19,9 +19,9 @@
 MAINTAINER Jessie Frazelle <jess@linux.com>
 
 # Install emacs:
-# Note: Emacs is only in testing repo -> http://pkgs.alpinelinux.org/packages?package=emacs&repo=all&arch=x86_64
+# Note: Emacs is only in testing repo -> https://pkgs.alpinelinux.org/packages?package=emacs&repo=all&arch=x86_64
 RUN apk --no-cache add \
-	--repository http://dl-3.alpinelinux.org/alpine/edge/testing/ \
+	--repository https://dl-3.alpinelinux.org/alpine/edge/testing/ \
 	emacs
 
 # Autorun doctor
diff --git a/dunnet/Dockerfile b/dunnet/Dockerfile
index 8e7c691..d528453 100644
--- a/dunnet/Dockerfile
+++ b/dunnet/Dockerfile
@@ -6,7 +6,7 @@
 #	Tested on Debian Jessie
 # USAGE:
 #	# Download dunnet Dockerfile
-#	wget http://raw.githubusercontent.com/jessfraz/dockerfiles/master/dunnet/Dockerfile
+#	wget https://raw.githubusercontent.com/jessfraz/dockerfiles/master/dunnet/Dockerfile
 #
 #	# Build dunnet image
 #	docker build -t dunnet .
@@ -19,9 +19,9 @@
 MAINTAINER Jessie Frazelle <jess@linux.com>
 
 # Install emacs:
-# Note: Emacs is only in testing repo -> http://pkgs.alpinelinux.org/packages?package=emacs&repo=all&arch=x86_64
+# Note: Emacs is only in testing repo -> https://pkgs.alpinelinux.org/packages?package=emacs&repo=all&arch=x86_64
 RUN apk --no-cache add \
-	--repository http://dl-3.alpinelinux.org/alpine/edge/testing/ \
+	--repository https://dl-3.alpinelinux.org/alpine/edge/testing/ \
 	emacs
 
 # Autorun dunnet
diff --git a/gitiles/Dockerfile b/gitiles/Dockerfile
index 2353a7d..17d6c3a 100644
--- a/gitiles/Dockerfile
+++ b/gitiles/Dockerfile
@@ -13,7 +13,7 @@
 	' \
 	set -x \
 	&& apk --no-cache add $buildDeps \
-	--repository http://dl-3.alpinelinux.org/alpine/edge/community/ \
+	--repository https://dl-3.alpinelinux.org/alpine/edge/community/ \
 	&& git clone --depth 1 https://github.com/facebook/buck.git /buck \
 	&& ( \
 		cd /buck \
diff --git a/gparted/Dockerfile b/gparted/Dockerfile
index 378d687..fb9dad4 100644
--- a/gparted/Dockerfile
+++ b/gparted/Dockerfile
@@ -6,7 +6,7 @@
 #	Tested on Debian Jessie
 # USAGE:
 #	# Download gparted Dockerfile
-#	wget http://raw.githubusercontent.com/jessfraz/dockerfiles/master/gparted/Dockerfile
+#	wget https://raw.githubusercontent.com/jessfraz/dockerfiles/master/gparted/Dockerfile
 #
 #	# Build gparted image
 #	docker build -t gparted .
diff --git a/keepass2/Dockerfile b/keepass2/Dockerfile
index a23c4c6..f192536 100644
--- a/keepass2/Dockerfile
+++ b/keepass2/Dockerfile
@@ -14,7 +14,7 @@
 # ISSUES:
 #	# 'Gtk: cannot open display: :0'
 #	Try to set 'DISPLAY=your_host_ip:0' or run 'xhost +' on your host.
-#	(see: http://stackoverflow.com/questions/28392949/running-chromium-inside-docker-gtk-cannot-open-display-0)
+#	(see: https://stackoverflow.com/questions/28392949/running-chromium-inside-docker-gtk-cannot-open-display-0)
 #
 
 FROM debian:sid
diff --git a/pulseaudio/daemon.conf b/pulseaudio/daemon.conf
index f01ae85..07b0a85 100644
--- a/pulseaudio/daemon.conf
+++ b/pulseaudio/daemon.conf
@@ -11,7 +11,7 @@
 # General Public License for more details.
 #
 # You should have received a copy of the GNU Lesser General Public License
-# along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
+# along with PulseAudio; if not, see <https://www.gnu.org/licenses/>.
 
 ## Configuration file for the PulseAudio daemon. See pulse-daemon.conf(5) for
 ## more information. Default values are commented out.  Use either ; or # for
diff --git a/skype/Dockerfile b/skype/Dockerfile
index 87d5855..9fa6031 100644
--- a/skype/Dockerfile
+++ b/skype/Dockerfile
@@ -10,7 +10,7 @@
 #	--name skype \
 #	jess/skype
 #
-FROM debian:stretch
+FROM debian:jessie
 
 # Tell debconf to run in non-interactive mode
 ENV DEBIAN_FRONTEND noninteractive
@@ -19,12 +19,14 @@
 # Make sure the repository information is up to date
 RUN dpkg --add-architecture i386 && \
 	apt-get update && apt-get install -y \
+	ca-certificates \
 	curl \
 	--no-install-recommends
 
+ENV SKYPE_VERSION 4.3.0.37-1
 
 # Install Skype
-RUN curl http://download.skype.com/linux/skype-debian_4.3.0.37-1_i386.deb > /usr/src/skype.deb && \
+RUN curl -sSL "https://download.skype.com/linux/skype-debian_${SKYPE_VERSION}_i386.deb" > /usr/src/skype.deb && \
 	dpkg --force-depends -i /usr/src/skype.deb && \
 	apt-get install -fy \
 	&& rm -rf /var/lib/apt/lists/*
diff --git a/ssr/Dockerfile b/ssr/Dockerfile
index 039dfe2..a0d654d 100644
--- a/ssr/Dockerfile
+++ b/ssr/Dockerfile
@@ -6,7 +6,7 @@
 #	Tested on Debian Jessie.
 # USAGE:
 #	# Download ssr Dockerfile
-#	wget http://raw.githubusercontent.com/jessfraz/dockerfiles/master/ssr/Dockerfile
+#	wget https://raw.githubusercontent.com/jessfraz/dockerfiles/master/ssr/Dockerfile
 #
 #	# Build ssr image
 #	docker build -t ssr .
diff --git a/sublime-text-3/Dockerfile b/sublime-text-3/Dockerfile
index c16a3bf..c369522 100644
--- a/sublime-text-3/Dockerfile
+++ b/sublime-text-3/Dockerfile
@@ -20,7 +20,7 @@
 # POSSIBLE ISSUES:
 #	# 'Gtk: cannot open display: :0'
 #	Try to set 'DISPLAY=your_host_ip:0' or run 'xhost +' on your host.
-#	(see: http://stackoverflow.com/questions/28392949/running-chromium-inside-docker-gtk-cannot-open-display-0)
+#	(see: https://stackoverflow.com/questions/28392949/running-chromium-inside-docker-gtk-cannot-open-display-0)
 #
 
 FROM debian:stretch
diff --git a/termboy/Dockerfile b/termboy/Dockerfile
index f8658cf..05899d5 100644
--- a/termboy/Dockerfile
+++ b/termboy/Dockerfile
@@ -6,7 +6,7 @@
 #	Tested on Debian Jessie.
 # USAGE:
 #	# Download termboy Dockerfile
-#	wget http://raw.githubusercontent.com/jessfraz/dockerfiles/master/termboy/Dockerfile
+#	wget https://raw.githubusercontent.com/jessfraz/dockerfiles/master/termboy/Dockerfile
 #
 #	# Build termboy image
 #	docker build -t termboy .
diff --git a/tetris/Dockerfile b/tetris/Dockerfile
index 34aeb73..2eb81c9 100644
--- a/tetris/Dockerfile
+++ b/tetris/Dockerfile
@@ -6,7 +6,7 @@
 #	Tested on Debian Jessie
 # USAGE:
 #	# Download tetris Dockerfile
-#	wget http://raw.githubusercontent.com/jessfraz/dockerfiles/master/tetris/Dockerfile
+#	wget https://raw.githubusercontent.com/jessfraz/dockerfiles/master/tetris/Dockerfile
 #
 #	# Build tetris image
 #	docker build -t tetris .
@@ -19,9 +19,9 @@
 MAINTAINER Jessie Frazelle <jess@linux.com>
 
 # Install emacs:
-# Note: Emacs is only in testing repo -> http://pkgs.alpinelinux.org/packages?package=emacs&repo=all&arch=x86_64
+# Note: Emacs is only in testing repo -> https://pkgs.alpinelinux.org/packages?package=emacs&repo=all&arch=x86_64
 RUN apk --no-cache add \
-	--repository http://dl-3.alpinelinux.org/alpine/edge/testing/ \
+	--repository https://dl-3.alpinelinux.org/alpine/edge/testing/ \
 	emacs
 
 # Autorun tetris
diff --git a/transmission-ui/Dockerfile b/transmission-ui/Dockerfile
index 3d3e418..ed6e640 100644
--- a/transmission-ui/Dockerfile
+++ b/transmission-ui/Dockerfile
@@ -6,7 +6,7 @@
 #	Tested on Debian Jessie
 # USAGE:
 #	# Download transmission-ui Dockerfile
-#	wget http://raw.githubusercontent.com/jessfraz/dockerfiles/master/transmission-ui/Dockerfile
+#	wget https://raw.githubusercontent.com/jessfraz/dockerfiles/master/transmission-ui/Dockerfile
 #
 #	# Build transmission image
 #	docker build -t jess/transmission-ui .
diff --git a/transmission/Dockerfile b/transmission/Dockerfile
index 34275fd..1cf62b3 100644
--- a/transmission/Dockerfile
+++ b/transmission/Dockerfile
@@ -6,7 +6,7 @@
 #	Tested on Debian Jessie
 # USAGE:
 #	# Download transmission Dockerfile
-#	wget http://raw.githubusercontent.com/jessfraz/dockerfiles/master/transmission/Dockerfile
+#	wget https://raw.githubusercontent.com/jessfraz/dockerfiles/master/transmission/Dockerfile
 #
 #	# Build transmission image
 #	docker build -t jess/transmission .
diff --git a/vault/Dockerfile b/vault/Dockerfile
index 78ae7e8..378c6c8 100644
--- a/vault/Dockerfile
+++ b/vault/Dockerfile
@@ -22,7 +22,7 @@
 		zip \
 	' \
 	set -x \
-	&& apk --no-cache add --repository http://dl-3.alpinelinux.org/alpine/edge/community $buildDeps \
+	&& apk --no-cache add --repository https://dl-3.alpinelinux.org/alpine/edge/community $buildDeps \
 	&& mkdir -p /go/src/github.com/hashicorp \
 	&& git clone --branch ${VAULT_VERSION} https://github.com/hashicorp/vault /go/src/github.com/hashicorp/vault \
 	&& cd /go/src/github.com/hashicorp/vault \