get network if already exists and return a network object with the networkname

Author: nunokisc

lib/networks.js

@@ -5,9 +5,14 @@ module.exports = async function (docker, projectName, recipe, output) {
     var network = recipe.networks[networkName];
     if (network === null) {
       try {
-        networks.push(await docker.createNetwork({ 'Name': projectName + '_' + networkName, 'CheckDuplicate': true }));
+        networks.push({ "name": projectName + '_' + networkName, "network": await docker.createNetwork({ 'Name': projectName + '_' + networkName, 'CheckDuplicate': true }) });
       } catch (err) {
-        throw err;
+        if (err.statusCode == 409 && err.json.message.includes("already exists")) {
+          let returnedNetwork = await docker.listNetworks({ "filters": { "name": [projectName + '_' + networkName] } })
+          networks.push({ "name": projectName + '_' + networkName, "network": await docker.getNetwork(returnedNetwork[0].Id) })
+        } else {
+          throw err;
+        }
       }
       continue
     }
@@ -48,9 +53,14 @@ module.exports = async function (docker, projectName, recipe, output) {
 
   if (networks.length === 0) {
     try {
-      await docker.createNetwork({ 'Name': projectName + '_default', 'CheckDuplicate': true });
+      networks.push({ "name": projectName + '_' + networkName, "network": await docker.createNetwork({ 'Name': projectName + '_default', 'CheckDuplicate': true }) });
     } catch (err) {
-      throw err;
+      if (err.statusCode == 409 && err.json.message.includes("already exists")) {
+        let returnedNetwork = await docker.listNetworks({ "filters": { "name": [projectName + '_default'] } })
+        networks.push({ "name": projectName + '_' + networkName, "network": await docker.getNetwork(returnedNetwork[0].Id) })
+      } else {
+        throw err;
+      }
     }
   }