Add Maven profile to skip integration tests when Docker unavailable

Integration tests using Testcontainers require Docker. This profile allows
running unit tests in CI/CD environments or local setups without Docker.

Usage:
  mvn test -P skip-integration-tests

Results:
- 97 unit tests pass
- 18 integration tests skipped (require Docker)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

pom.xml

@@ -208,4 +208,25 @@
         </plugins>
     </build>
 
+    <profiles>
+        <!-- Profile to skip integration tests (useful when Docker is not available) -->
+        <profile>
+            <id>skip-integration-tests</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-surefire-plugin</artifactId>
+                        <configuration>
+                            <excludes>
+                                <exclude>**/*IntegrationTest.java</exclude>
+                                <exclude>**/ActivityImageServiceTest.java</exclude>
+                            </excludes>
+                        </configuration>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+
 </project>