docs: fix example policy name typo (#143)

Rename s/config-policy-only.yaml /config.example.policy.only/
Removed POLICY_FILE references

docs/docs/examples/docker/basic.docker-compose.yml

@@ -26,7 +26,7 @@ services:
     volumes:
       - ./cert.pem:/pomerium/cert.pem:ro
       - ./privkey.pem:/pomerium/privkey.pem:ro
-      - ./config-policy-only.yaml:/pomerium/config.yaml:ro
+      - ./config.example.policy.only.yaml:/pomerium/config.yaml:ro
     ports:
       - 443:443
 

docs/docs/examples/docker/nginx.docker-compose.yml

@@ -42,7 +42,6 @@ services:
     environment:
       - POMERIUM_DEBUG=true
       - SERVICES=proxy
-      - POLICY_FILE=policy.yaml
       - AUTHENTICATE_SERVICE_URL=https://authenticate.corp.beyondperimeter.com
       # IMPORTANT! If you are running pomerium behind another ingress (loadbalancer/firewall/etc)
       # you must tell pomerium proxy how to communicate using an internal hostname for RPC
@@ -60,7 +59,7 @@ services:
     volumes:
       - ./cert.pem:/pomerium/cert.pem:ro
       - ./privkey.pem:/pomerium/privkey.pem:ro
-      - ./config-policy-only.yaml:/pomerium/config.yaml:ro
+      - ./config.example.policy.only.yaml:/pomerium/config.yaml:ro
     expose:
       - 443
 
@@ -70,7 +69,6 @@ services:
     environment:
       - POMERIUM_DEBUG=true
       - SERVICES=authorize
-      - POLICY_FILE=policy.yaml
       - SHARED_SECRET=aDducXQzK2tPY3R4TmdqTGhaYS80eGYxcTUvWWJDb2M=
       # nginx settings
       - VIRTUAL_PROTO=https
@@ -79,7 +77,7 @@ services:
     volumes:
       - ./cert.pem:/pomerium/cert.pem:ro
       - ./privkey.pem:/pomerium/privkey.pem:ro
-      - ./config-policy-only.yaml:/pomerium/config.yaml:ro
+      - ./config.example.policy.only.yaml:/pomerium/config.yaml:ro
     expose:
       - 443