feat(mining): add internal-miner feature to docker

docker/Dockerfile

@@ -16,7 +16,7 @@
 #
 # Keep these argument defaults in sync with GitHub vars.RUST_PROD_FEATURES and vars.RUST_TEST_FEATURES
 # https://github.com/ZcashFoundation/zebra/settings/variables/actions
-ARG FEATURES="default-release-binaries"
+ARG FEATURES="default-release-binaries internal-miner"
 ARG TEST_FEATURES="lightwalletd-grpc-tests zebra-checkpoints"
 ARG EXPERIMENTAL_FEATURES=""
 

docker/entrypoint.sh

@@ -144,10 +144,15 @@ EOF
     fi
   fi
 
-  if [[ -n "${MINER_ADDRESS}" ]]; then
+  if [[ " ${FEATURES} " =~ " internal-miner " ]]; then
     cat <<EOF >> "${ZEBRA_CONF_PATH}"
+[mempool]
+debug_enable_at_height = 0
+
 [mining]
-miner_address = "${MINER_ADDRESS}"
+miner_address = "${MINER_ADDRESS:='t27eWDgjFYJGVXmzrXeVjnb5J3uXDM9xH9v'}"
+internal_miner = true
+
 EOF
   fi
 fi