Make env var examples consistent casing

Simplify env files, add filler env var for GRPC_AUTH_TOKEN

src/docker/example.local.env

@@ -20,20 +20,12 @@ MINIMUM_STARTING_VERSION="0"
 # ---------------------------------------------------------------------------- #
 #                      GRPC endpoint & authentication token
 #
-# The GRPC endpoint from which the indexer receives event data. Aptos Labs
-# runs several public endpoints, listed below.
-#
-# If you're not running a localnet (local network), you must provide a valid
-# GRPC_AUTH_TOKEN. You can get one from https://developers.aptoslabs.com/.
-#
-# mainnet: https://grpc.mainnet.aptoslabs.com:443
-# testnet: https://grpc.testnet.aptoslabs.com:443
-# devnet: https://grpc.devnet.aptoslabs.com:443
-# local: http://host.docker.internal:50051 (if running a localnet)
+# The GRPC endpoint from which the indexer receives event data.
 #
+# You do not need to provide a valid GRPC_AUTH_TOKEN for a local network.
 # ---------------------------------------------------------------------------- #
 GRPC_DATA_SERVICE_URL="http://host.docker.internal:50051"
-GRPC_AUTH_TOKEN="token_not_necessary_locally"
+GRPC_AUTH_TOKEN="_" # Not used locally, but must at least be one character.
 
 # ---------------------------------------------------------------------------- #
 #                Miscellaneous indexer processor configurations

src/docker/example.mainnet.env

@@ -11,7 +11,7 @@
 # See: https://github.com/aptos-foundation/AIPs/blob/main/aips/aip-40.md
 # ---------------------------------------------------------------------------- #
 EMOJICOIN_MODULE_ADDRESS="0xface729284ae5729100b3a9ad7f7cc025ea09739cd6e7252aff0beb53619cafe"
-EMOJICOIN_ARENA_MODULE_ADDRESS="___not_on_mainnet_yet___"
+EMOJICOIN_ARENA_MODULE_ADDRESS="NOT_ON_MAINNET_YET"
 
 # The transaction version to start indexing at. Most often this should just be
 # the transaction version where the `emojicoin_dot_fun` module is published.
@@ -20,17 +20,9 @@ MINIMUM_STARTING_VERSION="1943970510"
 # ---------------------------------------------------------------------------- #
 #                      GRPC endpoint & authentication token
 #
-# The GRPC endpoint from which the indexer receives event data. Aptos Labs
-# runs several public endpoints, listed below.
-#
-# If you're not running a localnet (local network), you must provide a valid
-# GRPC_AUTH_TOKEN. You can get one from https://developers.aptoslabs.com/.
-#
-# mainnet: https://grpc.mainnet.aptoslabs.com:443
-# testnet: https://grpc.testnet.aptoslabs.com:443
-# devnet: https://grpc.devnet.aptoslabs.com:443
-# local: http://host.docker.internal:50051 (if running a localnet)
+# The GRPC endpoint from which the indexer receives event data.
 #
+# You must provide a valid GRPC_AUTH_TOKEN. See https://developers.aptoslabs.com
 # ---------------------------------------------------------------------------- #
 GRPC_DATA_SERVICE_URL="https://grpc.mainnet.aptoslabs.com:443"
 GRPC_AUTH_TOKEN="MUST_PROVIDE_TOKEN_HERE"

src/docker/example.testnet.env

@@ -20,17 +20,9 @@ MINIMUM_STARTING_VERSION="5675600000"
 # ---------------------------------------------------------------------------- #
 #                      GRPC endpoint & authentication token
 #
-# The GRPC endpoint from which the indexer receives event data. Aptos Labs
-# runs several public endpoints, listed below.
-#
-# If you're not running a localnet (local network), you must provide a valid
-# GRPC_AUTH_TOKEN. You can get one from https://developers.aptoslabs.com/.
-#
-# mainnet: https://grpc.mainnet.aptoslabs.com:443
-# testnet: https://grpc.testnet.aptoslabs.com:443
-# devnet: https://grpc.devnet.aptoslabs.com:443
-# local: http://host.docker.internal:50051 (if running a localnet)
+# The GRPC endpoint from which the indexer receives event data.
 #
+# You must provide a valid GRPC_AUTH_TOKEN. See https://developers.aptoslabs.com
 # ---------------------------------------------------------------------------- #
 GRPC_DATA_SERVICE_URL="https://grpc.testnet.aptoslabs.com:443"
 GRPC_AUTH_TOKEN="MUST_PROVIDE_TOKEN_HERE"