Adding documentation docker progress and fixes for Debian.

CONTRIBUTING.md

@@ -8,7 +8,54 @@ this project.
 ## Docker
 
 Docker is the recommended way for novices to
-test this software, to use it... (In progress)
+test this software, to use it first you
+are going to have to install a bunch of packages
+in the host.
+
+### Install Docker deps in the Host.
+
+```shell
+sudo apt update && \
+sudo apt install docker.io redis postgresql pwgen
+```
+
+### Configure Redis in the Host for Docker
+
+Now you are going to have to reconfigure
+redis to use unix sockets that you can share
+with redis.
+
+```shell
+( cat << 'EOF'
+unixsocket /var/run/redis/redis.sock
+unixsocketperm 777
+EOF
+) | sudo tee -a /etc/redis/redis.conf && \
+sudo systemctl restart redis
+```
+### Setup the database in the Host.
+
+```shell
+( cat << EOF
+create user $(whoami);
+create database "las_tres";
+grant all privileges on database "las_tres" to $(whoami);
+alter database "las_tres" owner to $(whoami);
+EOF
+) | sudo -u postgres psql
+```
+
+### Exec the webpage using Docker.
+
+```shell
+bash start_docker.sh
+```
+
+The first time you execute this the database migrations
+won't be applied but we are going to solve this soon.
+
+As soon as the application is already listening interrupt
+the process and
 
 ## Installing
 

docker/entrypoint.sh

@@ -14,9 +14,10 @@ if ! [ -f las_tres.yml ]; then
     cat << EOF > las_tres.yml
 secrets:
   - $(pwgen -s 512 1)
-  database:
+database:
+  user: $(whoami)
   dbname: las_tres 
-  hypnotoad:
+hypnotoad:
   listen:
     - http://*:3000
 EOF

lib/LasTres/Redis.pm

@@ -18,8 +18,13 @@ our $VERSION = $LasTres::Schema::VERSION;
     sub new {
         my $class = shift;
         if ( !defined $self ) {
+            my $redis_file = '/var/run/redis/redis.sock';
+            if (-e $redis_file) {
                 $self = $class->SUPER::new(
-                Mojo::URL->new->host("/var/run/redis/redis.sock") );
+                    Mojo::URL->new->host($redis_file) );
+            } else {
+                $self = $class->SUPER::new(@_);
+            }
         }
         return $self;
     }

start_docker.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-CURRENT_DIR=$(dirname $0)
+CURRENT_DIR=$(realpath $(dirname $0))
 NEEDS_SUDO=0
 SUDO=""
 DOCKER_TAG="lastres:latest"
@@ -13,6 +13,18 @@ perl -pe 's/\{\{UID\}\}/'"$UID/" Dockerfile.template > Dockerfile
 OLD_CHECKSUM_DOCKER="$(cat $CHECKSUM_DOCKER_FILE 2> /dev/null)"
 CURRENT_CHECKSUM_DOCKER="$(sha512sum Dockerfile | awk '{ print $1 }')"
 
+if ! [ -f las_tres.yml ]; then
+    cat << EOF > las_tres.yml
+secrets:
+  - $(pwgen -s 512 1)
+database:
+  user: $(whoami)
+  dbname: las_tres 
+hypnotoad:
+  listen:
+    - http://*:3000
+EOF
+fi &&
 if ! docker image ls 2>/dev/null; then
     NEEDS_SUDO=1
 fi