Move Docker scripts (#138)

Just reorganizing

docker/scripts/inject_bootnodes.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+
+# this script runs the cumulus-test-parachain-collator after fetching
+# appropriate bootnode IDs
+#
+# this is _not_ a general-purpose script; it is closely tied to the
+# root docker-compose.yml
+
+set -e -o pipefail
+
+ctpc="/usr/bin/cumulus-test-parachain-collator"
+
+if [ ! -x "$ctpc" ]; then
+    echo "FATAL: $ctpc does not exist or is not executable"
+    exit 1
+fi
+
+# name the variable with the incoming args so it isn't overwritten later by function calls
+args=( "$@" )
+
+alice="172.28.1.1"
+bob="172.28.1.2"
+p2p_port="30333"
+rpc_port="9933"
+
+
+get_id () {
+    node="$1"
+    /wait-for-it.sh "$node:$rpc_port" -t 10 -s -- \
+        curl -sS \
+            -H 'Content-Type: application/json' \
+            --data '{"id":1,"jsonrpc":"2.0","method":"system_networkState"}' \
+            "$node:$rpc_port" |\
+    jq -r '.result.peerId'
+}
+
+bootnode () {
+    node="$1"
+    id=$(get_id "$node")
+    if [ -z "$id" ]; then
+        echo >&2 "failed to get id for $node"
+        exit 1
+    fi
+    echo "/ip4/$node/tcp/$p2p_port/p2p/$id"
+}
+
+args+=( "--" "--bootnodes=$(bootnode "$alice")" "--bootnodes=$(bootnode "$bob")" )
+
+set -x
+"$ctpc" "${args[@]}"