Added dockerfile to support runing tests in docker

.dockerignore

@@ -0,0 +1,3 @@
+.gitignore
+Dockerfile
+README.md

.gitignore

@@ -1,2 +1,4 @@
 node_modules
 .DS_Store
+screenshots
+cypress/fixtures/*

Dockerfile

@@ -0,0 +1,6 @@
+FROM cypress/included:6.4.0
+ADD ./ /app/
+WORKDIR /app
+RUN npm update caniuse-lite browserslist
+RUN yarn
+ENTRYPOINT ["cypress"]

README.md

@@ -1,8 +1,27 @@
 # Freefeed Acceptance Tests
 
+## Run locally
 1. `yarn` to install Cypress (https://cypress.io).
-1. `yarn cypress:run` to run the headless test suite.
-1. `yarn cypress:open` to open Cypress app and run tests manually or work on writing new ones. Change `baseUrl` in `cypress.json` if you want to work with your local dev server.
+2. `yarn cypress:run` to run the headless test suite.
+3. `yarn cypress:open` to open Cypress app and run tests manually or work on writing new ones. Change `baseUrl` in `cypress.json` if you want to work with your local dev server.
+
+## Run in docker
+
+
+```bash
+
+docker build -t tests:local .
+
+docker run tests:local run
+
+```
+Mount subfolder from current folder for screenshots
+
+```bash
+
+docker run -v ${PWD}/screenshots:/app/cypress/screenshots tests:local run
+
+```
 
 ### Useful links
 

cypress/tests/browsing/anonymous.spec.js

@@ -1,5 +1,5 @@
 describe('Anonymous user can browse', () => {
-  it('Visits main page and sees a weclome page with a signup link', () => {
+  it('Visits main page and sees a welcome page with a signup link', () => {
     cy.visit('/');
 
     cy.get('header')