diff --git a/Dockerfile b/Dockerfile
index 4b3a9bf06..d66024813 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,10 @@
 FROM ubuntu:12.04
-RUN apt-get update
-RUN apt-get install -y python-software-properties git
-RUN add-apt-repository -y ppa:duh/golang
-RUN apt-get update
-RUN apt-get install -y golang
+# Let's install go just like Docker (from source).
+RUN apt-get update -q
+RUN apt-get install -qy build-essential curl git
+RUN curl -s https://go.googlecode.com/files/go1.2.src.tar.gz | tar -v -C /usr/local -xz
+RUN cd /usr/local/go/src && ./make.bash --no-clean 2>&1
+ENV PATH /usr/local/go/bin:$PATH
 ADD . /opt/etcd
 RUN cd /opt/etcd && ./build
 EXPOSE 4001 7001
diff --git a/README.md b/README.md
index 0e67f34e9..6384ad8ab 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ cd etcd
 
 This will generate a binary in the base directory called `./etcd`.
 
-_NOTE_: you need go 1.1+. Please check your installation with
+_NOTE_: you need go 1.2+. Please check your installation with
 
 ```
 go version
diff --git a/go_version.go b/go_version.go
index c29bd87ca..e5223c5df 100644
--- a/go_version.go
+++ b/go_version.go
@@ -1,3 +1,3 @@
-// +build !go1.1
+// +build !go1.2
 
-"etcd requires go 1.1 or greater to build"
+"etcd requires go 1.2 or greater to build"