Make cAdvisor Dockerimage much smaller.

Remove old Dockerfiles for deployment and create a new one that only
includes the statically linked binaries we need. This creates an image
that is ~22MB in size.

deploy/Dockerfile

@@ -0,0 +1,11 @@
+FROM scratch
+MAINTAINER dengnan@google.com vmarmol@google.com
+
+# NOTE: Run prepare.sh before building this Docker image.
+
+# Grab lmctfy and cadvisor from the staging directory.
+ADD lmctfy /usr/bin/lmctfy
+ADD cadvisor /usr/bin/cadvisor
+
+EXPOSE 8080
+ENTRYPOINT ["/usr/bin/cadvisor"]

deploy/docker-only/Dockerfile

@@ -1,9 +0,0 @@
-FROM busybox:ubuntu-14.04
-MAINTAINER kyurtsever@google.com dengnan@google.com vmarmol@google.com jason@swindle.me
-
-# Get cAdvisor binaries.
-ADD http://storage.googleapis.com/cadvisor-bin/cadvisor-0.1.3 /usr/bin/cadvisor
-RUN chmod +x /usr/bin/cadvisor
-
-EXPOSE 8080
-ENTRYPOINT ["/usr/bin/cadvisor"]

deploy/lmctfy-docker/Dockerfile

@@ -1,14 +0,0 @@
-FROM ubuntu:14.04
-MAINTAINER kyurtsever@google.com dengnan@google.com vmarmol@google.com
-
-# Get the lmctfy dependencies.
-RUN apt-get update && apt-get install -y -q --no-install-recommends pkg-config libprotobuf8 libapparmor1
-
-# Get the lcmtfy and cAdvisor binaries.
-ADD http://storage.googleapis.com/cadvisor-bin/lmctfy/lmctfy /usr/bin/lmctfy
-ADD http://storage.googleapis.com/cadvisor-bin/lmctfy/libre2.so.0.0.0 /usr/lib/libre2.so.0
-ADD http://storage.googleapis.com/cadvisor-bin/cadvisor-0.1.3 /usr/bin/cadvisor
-RUN chmod +x /usr/bin/lmctfy && chmod +x /usr/bin/cadvisor
-
-EXPOSE 8080
-ENTRYPOINT ["/usr/bin/cadvisor"]

deploy/prepare.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+set -e
+set -x
+
+# Download lmctfy.
+wget http://storage.googleapis.com/cadvisor-bin/lmctfy/lmctfy
+chmod +x lmctfy
+
+# Statically build cAdvisor from source and stage it.
+go build --ldflags '-extldflags "-static"' github.com/google/cadvisor