Added some variables and modules

roles/blockscout/tasks/main.yml

@@ -12,7 +12,13 @@
     dest: "{{ home }}/blockscout/apps/explorer/config/dev.secret.exs"
 
 - name: Add block_scout_web dev.secret
-  shell: cp {{ home }}/blockscout/apps/block_scout_web/config/dev.secret.exs.example {{ home }}/blockscout/apps/block_scout_web/config/dev.secret.exs
+  copy:
+    src: '{{ home }}/blockscout/apps/block_scout_web/config/dev.secret.exs.example'
+    remote_src: yes
+    dest: '{{ home }}/blockscout/apps/block_scout_web/config/dev.secret.exs'
+    owner: '{{ username }}'
+    group: '{{ username }}'
+    mode: 0644
 
 - name: Install dependencies
   shell: cd {{ home }}/blockscout && mix local.hex --force && mix do deps.get, local.rebar --force, deps.compile, compile
@@ -39,7 +45,10 @@
   shell: cd {{ home }}/blockscout/apps/block_scout_web/assets && npm install node-sass --unsafe-perm; cd -
 
 - name: Install node dependensies in the apps/explorer
-  shell: cd {{ home }}/blockscout/apps/explorer && npm install; cd -
+  npm:
+    path: "{{ home }}/blockscout/apps/explorer"
+    state: present
+  become: true
 
 - name: Start server
   shell: cd {{ home }}/blockscout && mix phx.server

roles/elixir/defaults/main.yml

@@ -1,3 +1,7 @@
 ---
 
-ERLANG_SOURCE_DEB: "https://packages.erlang-solutions.com/ubuntu"
+ERLANG_SIGNING_KEY_URL: "https://packages.erlang-solutions.com/ubuntu/erlang_solutions.asc"
+ERLANG_SOURCE_DEB: "https://packages.erlang-solutions.com/ubuntu"
+POSTGRESQL_SIGNING_KEY_URL: "https://www.postgresql.org/media/keys/ACCC4CF8.asc"
+POSTGRESQL_SOURCE_DEB: "http://apt.postgresql.org/pub/repos/apt/"
+POSTGRESQL_DISTRIBUTION_RELEASE: "xenial-pgdg"

roles/elixir/tasks/ubuntu.yml

@@ -2,12 +2,12 @@
 
 - name: Add ubuntu/erlang_solutions signing key
   apt_key:
-    url: https://packages.erlang-solutions.com/ubuntu/erlang_solutions.asc
+    url: '{{ ERLANG_SIGNING_KEY_URL }}'
     state: present
 
 - name: Add erlang-solutions repository into sources list
   apt_repository:
-    repo: deb https://packages.erlang-solutions.com/ubuntu xenial contrib
+    repo: 'deb {{ ERLANG_SOURCE_DEB }} {{ansible_distribution_release}} contrib'
     state: present
 
 - name: Install erlang and elixir
@@ -22,12 +22,12 @@
 
 - name: Add PostgreSQL signing key
   apt_key:
-    url: https://www.postgresql.org/media/keys/ACCC4CF8.asc
+    url: '{{ POSTGRESQL_SIGNING_KEY_URL }}'
     state: present
 
 - name: Add PostgreSQL into sources list
   apt_repository:
-    repo: deb http://apt.postgresql.org/pub/repos/apt/ xenial-pgdg main
+    repo: 'deb {{ POSTGRESQL_SOURCE_DEB }} {{ POSTGRESQL_DISTRIBUTION_RELEASE }} main'
     state: present
 
 - name: Install PostgreSQL and other tools