docs: Update README to reflect the true defaults

Author: ElioDiNino

README.md

@@ -12,18 +12,18 @@ End user configuration via environment variables was a goal while creating this.
 ```text
 Format is: VAR=default # info
 
-CODECOV_API_HOST=api  # This is the host to access the codecov api
+CODECOV_API_HOST=api # This is the host to access the codecov api
 CODECOV_API_PORT=8000 # The port to access the codecov api
 CODECOV_API_SCHEME=http # The scheme on which to access the codecov api. http or https
-CODECOV_API_HOST_HEADER="\$http_host" # The host to send as the host header. Default passes through host. Useful to set for local envs.
-CODECOV_IA_HOST=IA
+CODECOV_API_HOST_HEADER="%[req.hdr(Host)]" # The host to send as the host header. Default passes through host. Useful to set for local envs.
+CODECOV_IA_HOST=api
 CODECOV_IA_PORT=8000
 CODECOV_IA_SCHEME=http
-CODECOV_IA_HOST_HEADER="\$http_host"
+CODECOV_IA_HOST_HEADER="%[req.hdr(Host)]"
 CODECOV_DEFAULT_HOST=frontend
-CODECOV_DEFAULT_PORT=5000
+CODECOV_DEFAULT_PORT=8080
 CODECOV_DEFAULT_SCHEME=http
-CODECOV_DEFAULT_HOST_HEADER="\$http_host"
+CODECOV_DEFAULT_HOST_HEADER="%[req.hdr(Host)]"
 CODECOV_MINIO_HOST=minio
 CODECOV_MINIO_PORT=9000
 CODECOV_MINIO_SCHEME=http
@@ -38,7 +38,7 @@ Use public codecov api, local IA and qa for web
 
 CODECOV_API_HOST=api.codecov.io
 CODECOV_API_PORT=443
-CODECOV_API_SCHEME=https 
+CODECOV_API_SCHEME=https
 CODECOV_API_HOST_HEADER=api.codecov.io
 CODECOV_IA_HOST=IA
 CODECOV_IA_PORT=8000
@@ -52,11 +52,11 @@ CODECOV_DEFAULT_HOST_HEADER="qa.codecov.dev"
 
 ### SSL
 1. Mount a valid cert in the container at `/etc/codecov/ssl/certs/cert.crt`
-2. Configure the env `CODECOV_GATEWAY_SSL_ENABLED=true` 
+2. Configure the env `CODECOV_GATEWAY_SSL_ENABLED=true`
 
 ### Proxy
 1. Configure the env `CODECOV_GATEWAY_PROXY_MODE_ENABLED=true`
-All requests will now be sent on to the configured CODECOV_DEFAULT host/port.
+All requests will now be sent on to the configured `CODECOV_DEFAULT` host/port.
 
 ### Minio
 This is mostly intended for when using with docker compose. It makes /export and /archive route to the minio host. To enable minio features use the env var `CODECOV_GATEWAY_MINIO_ENABLED=true`