config (for all trading images) is made more flexible, docker compose initial

docker/trading/executor/start_docker_executor.sh

@@ -1,12 +1,12 @@
 #!/bin/bash
 
 usage() {
-  echo -n "Usage: $0"
-  echo -n " [-c <config (dflt: http://cloud23.cvtt.vpn:6789/apps/cvtt_eqt_alpaca)>]"
-  echo -n " [-e <active_exchanges (ALPACA_SNDBX-MDPORTAL)>]"
-  echo -n " [-a <admin_port (7222)>"]
-  echo
-  exit 1
+    echo -n "Usage: $0"
+    echo -n " [-c <config (dflt: http://cloud23.cvtt.vpn:6789/apps/cvtt_eqt_alpaca)>]"
+    echo -n " [-e <active_exchanges (ALPACA_SNDBX-MDPORTAL)>]"
+    echo -n " [-a <admin_port (7222)>"]
+    echo
+    exit 1
 }
 
 args=${*}
@@ -17,25 +17,25 @@ AdminPort=7222
 Book=""
 
 while getopts ":c:e:a:" opt; do
-  case ${opt} in
-    c )
-      Config=$OPTARG
-      ;;
-    e )
-      ActiveExchanges=$OPTARG
-      ;;
-    a )
-      AdminPort=$OPTARG
-      ;;
-    \? )
-      echo "Invalid option: -$OPTARG" >&2
-      usage
-      ;;
-    : )
-      echo "Option -$OPTARG requires an argument." >&2
-      usage
-      ;;
-  esac
+    case ${opt} in
+        c )
+            Config=$OPTARG
+            ;;
+        e )
+            ActiveExchanges=$OPTARG
+            ;;
+        a )
+            AdminPort=$OPTARG
+            ;;
+        \? )
+            echo "Invalid option: -$OPTARG" >&2
+            usage
+            ;;
+        : )
+            echo "Option -$OPTARG requires an argument." >&2
+            usage
+            ;;
+    esac
 done
 
 echo "Config=${Config}"