diff --git a/.env.sample b/.env.sample
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+# Copy this file to .env, remove this comment and change the keys. For development
+# with docker this should mostly work out of the box other than setting the Slack
+# keys (for auth) and the SECRET_KEY.
+#
+# Please use `openssl rand -hex 32` to create SECRET_KEY
+SECRET_KEY=generate_a_new_key
+
+DATABASE_URL=postgres://user:pass@postgres:5432/outline
+DATABASE_URL_TEST=postgres://user:pass@postgres:5432/outline-test
+REDIS_URL=redis://redis:6379
+
+URL=http://localhost:3000
+PORT=3000
+
+DEPLOYMENT=self
+ENABLE_UPDATES=true
+SUBDOMAINS_ENABLED=false
+WEBSOCKETS_ENABLED=true
+DEBUG=cache,presenters,events
+
+# Third party signin credentials (at least one is required)
+SLACK_KEY=get_a_key_from_slack
+SLACK_SECRET=get_the_secret_of_above_key
+
+GOOGLE_CLIENT_ID=
+GOOGLE_CLIENT_SECRET=
+# Comma separated list of domains to be allowed (optional)
+# If not set, all Google apps domains are allowed by default
+GOOGLE_ALLOWED_DOMAINS=
+
+# Third party credentials (optional)
+SLACK_VERIFICATION_TOKEN=PLxk6OlXXXXXVj3YYYY
+SLACK_APP_ID=A0XXXXXXX
+SLACK_MESSAGE_ACTIONS=true
+GOOGLE_ANALYTICS_ID=
+BUGSNAG_KEY=
+GITHUB_ACCESS_TOKEN=
+
+# AWS credentials (optional in dev)
+AWS_ACCESS_KEY_ID=get_a_key_from_aws
+AWS_SECRET_ACCESS_KEY=get_the_secret_of_above_key
+AWS_REGION=xx-xxxx-x
+AWS_S3_UPLOAD_BUCKET_URL=http://s3:4569
+AWS_S3_UPLOAD_BUCKET_NAME=bucket_name_here
+AWS_S3_UPLOAD_MAX_SIZE=26214400
+
+# Emails configuration (optional)
+SMTP_HOST=
+SMTP_PORT=
+SMTP_USERNAME=
+SMTP_PASSWORD=
+SMTP_FROM_EMAIL=
+SMTP_REPLY_EMAIL=
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