Docker mount volume documentation.

Summary: Add snapshots mount documentation. By default, build_interpreter takes alpha.conf as a config file.

Reviewers: teon.banek, dtomicevic

Reviewed By: teon.banek

Subscribers: pullbot, buda

Differential Revision: https://phabricator.memgraph.io/D464

config/alpha.conf

@@ -1,7 +1,7 @@
-# MEMGRAPH DEFAULT TESTING CONFIG
+# MEMGRAPH DEFAULT ALPHA CONFIG
 
 # NOTE: all paths are relative to the run folder
-# (where the executable is runned)
+# (where the executable is run)
 
 # path to the codes which will be compiled
 --compile_path="./compiled/"

docs/user_technical/installation.md

@@ -1,14 +1,13 @@
 ## Installation
 
-Memgraph is a 64-bit Linux compatible database management system.
+Memgraph is a 64-bit Linux compatible database management system.  For the
-For the purpose of Alpha testing Memgraph has been packed into
+purpose of Alpha testing Memgraph has been packed into Ubuntu 16.04 based
-Ubuntu 16.04 based [Docker](https://www.docker.com) image.
+[Docker](https://www.docker.com) image.  Before proceeding with the
-Before proceeding with the installation, please install
+installation, please install the Docker engine on your system.  Instructions
-the Docker engine on your system.
+how to install Docker can be found
-Instructions how to install Docker can be found
+[here](https://docs.docker.com/engine/installation).  Memgraph Docker image was
-[here](https://docs.docker.com/engine/installation).
+built with Docker version `1.12`, so all Docker versions since version `1.12`
-Memgraph Docker image was built with Docker version `1.12`,
+should work.
-so all Docker versions since version `1.12` should work.
 
 ### Import
 
@@ -21,11 +20,31 @@ docker load -i /path/to/<memgraph_docker_image_name>.tar.gz
 
 The most convenient way to start Memgraph is
 ```
-docker run -d -p 7687:7687 --name <memgraph_docker_container_name> <memgraph_docker_image_name>
+docker run -it -p 7687:7687 <memgraph_docker_image_name>
+```
+The `-it` option enables displaying Memgraph's logs inside the current shell.
+The `-p` option is used to specify the port which Memgraph will use to listen
+for requests.  Since the default Bolt protocol is `7687`, the straightforward
+option is to use that port.
+
+The recommended way to run Memgraph requires some additional configuration. A
+folder for database snapshots needs to be created and mounted on the host file
+system. It is also recommended to run the container in the background. On Linux
+system all of that can be executed as follows
+```
+# create snapshots folder on the host
+mkdir -p memgraph_snapshots
+# Docker expects full path to the created folder
+FULL_SNAPSHOTS_PATH=$PWD/memgraph_snapshots
+# run Memgraph
+docker run -d -p 7687:7687 -v ${FULL_SNAPSHOTS_PATH}:/memgraph/snapshots --name <memgraph_docker_container_name> <memgraph_docker_image_name>
 ```
 `-d` means that the container will be detached (run in the background mode).
-Because the default Bolt protocol port is `7687`, the straightforward option
+`-v` mounts snapshots folder inside the container on the host file system
-is to run Memgraph on that port.
+(useful for the recovery process).  With `--name` a user can set a custom name
+for the container (useful when the container has to be stopped).
+`<memgraph_docker_container_name>` could be any convenient name e.g.
+`memgraph_alpha`.
 
 ### Configuration Parameters
 

release/build_interpreter

@@ -22,7 +22,7 @@ project_dir="${release_dir}/.."
 
 skip_compile=false
 build_type="Debug"
-config_file="testing.conf"
+config_file="alpha.conf"
 version=""
 while [[ $# -gt 0 ]]
 do