Switch 3.3 to debian:jessie

```
Step 10 : RUN set -x 	&& apt-get update 	&& apt-get install -y 		mongodb-org-unstable=$MONGO_VERSION 		mongodb-org-unstable-server=$MONGO_VERSION 		mongodb-org-unstable-shell=$MONGO_VERSION 		mongodb-org-unstable-mongos=$MONGO_VERSION 		mongodb-org-unstable-tools=$MONGO_VERSION 	&& rm -rf /var/lib/apt/lists/* 	&& rm -rf /var/lib/mongodb 	&& mv /etc/mongod.conf /etc/mongod.conf.orig
 ---> Running in 3426ec82da14
+ apt-get update
Get:1 http://security.debian.org wheezy/updates Release.gpg [1554 B]
Get:2 http://security.debian.org wheezy/updates Release [39.0 kB]
Get:3 http://security.debian.org wheezy/updates/main amd64 Packages [467 kB]
Get:4 http://repo.mongodb.org wheezy/mongodb-org/3.3 Release.gpg [801 B]
Get:5 http://httpredir.debian.org wheezy Release.gpg [2373 B]
Get:6 http://repo.mongodb.org wheezy/mongodb-org/3.3 Release [2940 B]
Get:7 http://httpredir.debian.org wheezy-updates Release.gpg [1554 B]
Get:8 http://httpredir.debian.org wheezy Release [191 kB]
Get:9 http://repo.mongodb.org wheezy/mongodb-org/3.3/main amd64 Packages [7295 B]
Get:10 http://httpredir.debian.org wheezy-updates Release [151 kB]
Get:11 http://httpredir.debian.org wheezy/main amd64 Packages [7634 kB]
Get:12 http://httpredir.debian.org wheezy-updates/main amd64 Packages [7481 B]
Fetched 8506 kB in 1s (5344 kB/s)
Reading package lists...
+ apt-get install -y mongodb-org-unstable=3.3.8 mongodb-org-unstable-server=3.3.8 mongodb-org-unstable-shell=3.3.8 mongodb-org-unstable-mongos=3.3.8 mongodb-org-unstable-tools=3.3.8
Reading package lists...
Building dependency tree...
Reading state information...
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
 mongodb-org-unstable-mongos : Depends: libc6 (>= 2.14) but 2.13-38+deb7u10 is to be installed
 mongodb-org-unstable-server : Depends: libc6 (>= 2.14) but 2.13-38+deb7u10 is to be installed
 mongodb-org-unstable-shell : Depends: libc6 (>= 2.14) but 2.13-38+deb7u10 is to be installed
 mongodb-org-unstable-tools : Depends: libc6 (>= 2.14) but 2.13-38+deb7u10 is to be installed
E: Unable to correct problems, you have held broken packages.
The command '/bin/sh -c set -x 	&& apt-get update 	&& apt-get install -y 		mongodb-org-unstable=$MONGO_VERSION 		mongodb-org-unstable-server=$MONGO_VERSION 		mongodb-org-unstable-shell=$MONGO_VERSION 		mongodb-org-unstable-mongos=$MONGO_VERSION 		mongodb-org-unstable-tools=$MONGO_VERSION 	&& rm -rf /var/lib/apt/lists/* 	&& rm -rf /var/lib/mongodb 	&& mv /etc/mongod.conf /etc/mongod.conf.orig' returned a non-zero code: 100
```

Author: tianon

3.3/Dockerfile

@@ -1,4 +1,4 @@
-FROM debian:wheezy
+FROM debian:jessie
 
 # add our user and group first to make sure their IDs get assigned consistently, regardless of whatever dependencies get added
 RUN groupadd -r mongodb && useradd -r -g mongodb mongodb
@@ -30,7 +30,7 @@ RUN apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys 0C49F3730359A
 ENV MONGO_MAJOR 3.3
 ENV MONGO_VERSION 3.3.8
 
-RUN echo "deb http://repo.mongodb.org/apt/debian wheezy/mongodb-org/$MONGO_MAJOR main" > /etc/apt/sources.list.d/mongodb-org.list
+RUN echo "deb http://repo.mongodb.org/apt/debian jessie/mongodb-org/$MONGO_MAJOR main" > /etc/apt/sources.list.d/mongodb-org.list
 
 RUN set -x \
 	&& apt-get update \