Merge pull request #121 from nextmv-io/merschformann/improve-java-gurobi-example-license-handling

Improves license handling in java-gurobi-knapsack app

Author: merschformann

java-gurobi-knapsack/.devcontainer/devcontainer.json

@@ -13,7 +13,10 @@
   },
   "workspaceMount": "source=${localWorkspaceFolder}/.,target=/app,type=bind",
   "workspaceFolder": "/app",
+  "mounts": [
+    "source=${localEnv:HOME}${localEnv:USERPROFILE}/gurobi.lic,target=/root/gurobi.lic,type=bind,consistency=cached"
+  ],
   "containerEnv": {
-    "GRB_LICENSE_FILE": "./gurobi.lic"
+    "GRB_LICENSE_FILE": "/root/gurobi.lic"
   }
 }

java-gurobi-knapsack/README.md

@@ -4,9 +4,10 @@ Example for running a Java `Maven` application on the Nextmv Platform using the
 Gurobi solver. We solve a knapsack Mixed Integer Programming problem.
 
 1. Setup license:
-    1. **Local**: Add license file `gurobi.lic` to the root of the project.
-        - If not using VS-Code's dev container, just place the `gurobi.lic` file
-          in `$HOME/gurobi.lic` (Gurobi's default path for the license).
+    1. **Local**:
+        - You can simply place the `gurobi.lic` file in your _home directory_
+        (like Gurobi expects it). If you are using the dev container, it will be
+        mounted inside of the container for you.
     1. **Platform**: Don't forget to also define the license file as a
         [secret][secret] in your Nextmv Application as well. This can be easily
         done via [console].

java-gurobi-knapsack/java-gurobi-knapsack.code-workspace

@@ -12,9 +12,6 @@
         "request": "launch",
         "mainClass": "com.nextmv.example.Main",
         "projectName": "GurobiJava",
-        "env": {
-          "GRB_LICENSE_FILE": "gurobi.lic"
-        },
         "args": ["--input", "input.json", "--output", "output.json"]
       }
     ]