Add example/testing Docker Compose manifests (#88)

* Optimize final image build size by grouping commands in the same build step and deleting unneeded package installation files. Add non-interactive env vars.

* Add non-interactive env vars to builder apt-get. Readability.

* apt-get switches: be less forceful to allow detection of potentially harmful build errors.

* Add '--no-install-recommends' switch to apt-get command to reduce build time and make image smaller (#70).

* Add testing Docker Compose manifests.

* Dockerfile: Get source files from local build context instead of downloading from git.

* Docker Compose example manifests: Build from local context. Uncomment example options.

* Readme: Document Docker Compose manifest usage.

Author: pataquets

README.md

@@ -108,6 +108,15 @@ $ docker build -t memtier_benchmark .
 $ docker run --rm memtier_benchmark --help
 ```
 
+### Using Docker Compose
+```
+$ docker-compose -f docker-compose.memcached.yml up --build
+```
+or
+```
+$ docker-compose -f docker-compose.redis.yml up --build
+```
+
 ## Using memtier_benchmark
 
 See the included manpage or run::

docker-compose.memcached.yml

@@ -0,0 +1,11 @@
+memtier_benchmark:
+  build: .
+  command: --protocol=memcache_text --server=memcached --port=11211 --generate-keys
+  links:
+    - memcached
+
+memcached:
+  image: memcached
+  command: --verbose
+  ports:
+    - "11211:11211"

docker-compose.redis.yml

@@ -0,0 +1,11 @@
+memtier_benchmark:
+  build: .
+  command: --server=redis --generate-keys
+  links:
+    - redis
+
+redis:
+  image: redis
+  command: --maxmemory 64mb
+  ports:
+    - 6379:6379