Add acceptLicense method to MSSQLServerContainer (#2085)

Co-authored-by: Richard North <[email protected]>

Author: KyleAure

docs/modules/databases/mssqlserver.md

@@ -10,7 +10,8 @@ Running MS SQL Server as a stand-in for in a test:
 public class SomeTest {
 
     @Rule
-    public MSSQLServerContainer mssqlserver = new MSSQLServerContainer();
+    public MSSQLServerContainer mssqlserver = new MSSQLServerContainer()
+        .acceptLicense();
 
     @Test
     public void someTestMethod() {
@@ -20,7 +21,7 @@ public class SomeTest {
 ```
 
 !!! warning "EULA Acceptance"
-    Due to licencing restrictions you are required to accept an EULA for this container image. To indicate that you accept the MS SQL Server image EULA, Please place a file at the root of the classpath named `container-license-acceptance.txt`, e.g. at `src/test/resources/container-license-acceptance.txt`. This file should contain the line: `mcr.microsoft.com/mssql/server:2017-CU12` (or, if you are overriding the docker image name/tag, update accordingly).
+    Due to licencing restrictions you are required to accept an EULA for this container image. To indicate that you accept the MS SQL Server image EULA, call the `acceptLicense()` method, or place a file at the root of the classpath named `container-license-acceptance.txt`, e.g. at `src/test/resources/container-license-acceptance.txt`. This file should contain the line: `mcr.microsoft.com/mssql/server:2017-CU12` (or, if you are overriding the docker image name/tag, update accordingly).
 
     Please see the [`microsoft-mssql-server` image documentation](https://hub.docker.com/_/microsoft-mssql-server#environment-variables) for a link to the EULA document.
 

modules/mssqlserver/src/main/java/org/testcontainers/containers/MSSQLServerContainer.java

@@ -50,11 +50,24 @@ protected Integer getLivenessCheckPort() {
 
     @Override
     protected void configure() {
-        LicenseAcceptance.assertLicenseAccepted(this.getDockerImageName());
-        addEnv("ACCEPT_EULA", "Y");
+        // If license was not accepted programatically, check if it was accepted via resource file
+        if (!getEnvMap().containsKey("ACCEPT_EULA")) {
+            LicenseAcceptance.assertLicenseAccepted(this.getDockerImageName());
+            acceptLicense();
+        }
+
         addEnv("SA_PASSWORD", password);
     }
 
+    /**
+     * Accepts the license for the SQLServer container by setting the ACCEPT_EULA=Y
+     * variable as described at <a href="https://hub.docker.com/_/microsoft-mssql-server">https://hub.docker.com/_/microsoft-mssql-server</a>
+     */
+    public SELF acceptLicense() {
+        addEnv("ACCEPT_EULA", "Y");
+        return self();
+    }
+
     @Override
     public String getDriverClassName() {
         return "com.microsoft.sqlserver.jdbc.SQLServerDriver";
@@ -116,6 +129,5 @@ private void checkPasswordStrength(String password) {
                     "or percent (%)."
             );
         }
-
     }
 }