Add MailHog container to provide login with email without extra config

.env.sample

@@ -12,8 +12,8 @@ TWITTER_ID=
 TWITTER_SECRET=
 
 # email
-LOGIN_EMAIL_SERVER=
-LOGIN_EMAIL_FROM=
+LOGIN_EMAIL_SERVER=smtp://mailhog:1025
+LOGIN_EMAIL_FROM=sndev@mailhog.dev
 LIST_MONK_AUTH=
 
 ########################################################

README.md

@@ -325,6 +325,19 @@ You can login to test features like posting, replying, tipping, etc with `./snde
 
 ### Login with Email
 
+#### MailHog
+
+- The app is already prepared to send emails through (MailHog)[https://github.com/mailhog/MailHog] so no extra configuration is needed
+- Click "sign up" and enter any email address (remember, it's not going anywhere beyond your workstation)
+- Access MailHog's web UI on http://localhost:1025
+- Click the link (looks like this):
+
+```
+http://localhost:3000/api/auth/callback/email?email=satoshi%40gmail.com&token=110e30a954ce7ca643379d90eb511640733de405f34a31b38eeda8e254d48cd7
+```
+
+#### Sendgrid
+
 - Create a Sendgrid account (or other smtp service)
 
 ```

docker-compose.yml

@@ -377,6 +377,21 @@ services:
     command: daemon --docker -f label=com.docker.compose.project=${COMPOSE_PROJECT_NAME}
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock:ro
+  mailhog:
+    image: mailhog/mailhog:latest
+    container_name: mailhog
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8025"]
+      interval: 10s
+      timeout: 10s
+      retries: 10
+      start_period: 1m
+    ports:
+      - "8025:8025"
+      - "1025:1025"
+    links:
+      - app
 volumes:
   db:
   os: