allow specify agent environment variables (#28)

Author: brig

testcontainers-concord-core/src/main/java/ca/ibodrov/concord/testcontainers/Concord.java

@@ -28,10 +28,7 @@
 import org.testcontainers.lifecycle.Startable;
 
 import java.nio.file.Path;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 import java.util.function.Supplier;
 
 @SuppressWarnings({"unchecked"})
@@ -71,6 +68,8 @@ public class Concord<T extends Concord<T>> implements AutoCloseable {
 
     private List<MountPoint> agentBindMounts;
 
+    private Map<String, String> agentEnvironment;
+
     /**
      * Starts a Concord instance using the current configuration.
      */
@@ -491,6 +490,18 @@ public List<MountPoint> getAgentBindMounts() {
         return this.agentBindMounts;
     }
 
+    public T agentEnv(String name, String value) {
+        if (this.agentEnvironment == null) {
+            this.agentEnvironment = new HashMap<>();
+        }
+        this.agentEnvironment.put(name, value);
+        return (T) this;
+    }
+
+    public Map<String, String> agentEnvironment() {
+        return this.agentEnvironment;
+    }
+
     /**
      * Utilities to work with T processes.
      */

testcontainers-concord-core/src/main/java/ca/ibodrov/concord/testcontainers/DockerConcordEnvironment.java

@@ -135,6 +135,10 @@ public DockerConcordEnvironment(Concord<?> opts) {
             opts.getAgentBindMounts().forEach(m -> agent.withFileSystemBind(m.getSource(), m.getDest()));
         }
 
+        if (opts.agentEnvironment() != null) {
+            opts.agentEnvironment().forEach(agent::addEnv);
+        }
+
         String mavenConfigurationPath = opts.mavenConfigurationPath();
         if (mavenConfigurationPath != null) {
             mountMavenConfigurationFile(server, mavenConfigurationPath);