diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3481ac92..3fda0319 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -29,10 +29,20 @@ jobs:
           distribution: "temurin"
           cache: "maven"
 
-      # Build
+      # Build & Test
       - name: Build with Maven
-        run: mvn --batch-mode --update-snapshots verify
+        run: mvn --batch-mode --no-transfer-progress install
 
+      - name: Run integration tests on PostgreSQL
+        run: TEST_DATABASE=postgresql mvn --batch-mode --no-transfer-progress failsafe:integration-test failsafe:verify
+
+      - name: Run integration tests on MySQL
+        run: TEST_DATABASE=mysql mvn --batch-mode --no-transfer-progress failsafe:integration-test failsafe:verify
+
+      - name: Run integration tests on MariaDB
+        run: TEST_DATABASE=mariadb mvn --batch-mode --no-transfer-progress failsafe:integration-test failsafe:verify
+
+      # Upload artifacts
       - name: Upload JAR
         uses: actions/upload-artifact@v4
         if: ${{ matrix.java == '17' }}
diff --git a/commafeed-server/pom.xml b/commafeed-server/pom.xml
index 2cd193c8..e639f7d4 100644
--- a/commafeed-server/pom.xml
+++ b/commafeed-server/pom.xml
@@ -15,6 +15,14 @@
 		<guice.version>7.0.0</guice.version>
 		<querydsl.version>6.5</querydsl.version>
 		<rome.version>2.1.0</rome.version>
+
+		<testcontainers.version>1.19.8</testcontainers.version>
+		<!-- renovate: datasource=docker depName=postgres -->
+		<postgresql.image.version>16.2</postgresql.image.version>
+		<!-- renovate: datasource=docker depName=mysql -->
+		<mysql.image.version>8.4</mysql.image.version>
+		<!-- renovate: datasource=docker depName=mariadb -->
+		<mariadb.image.version>11.2</mariadb.image.version>
 	</properties>
 
 	<dependencyManagement>
@@ -31,6 +39,19 @@
 
 	<build>
 		<finalName>commafeed</finalName>
+		<testResources>
+			<testResource>
+				<directory>src/test/resources</directory>
+				<filtering>false</filtering>
+			</testResource>
+			<testResource>
+				<directory>src/test/resources</directory>
+				<includes>
+					<include>docker-images.properties</include>
+				</includes>
+				<filtering>true</filtering>
+			</testResource>
+		</testResources>
 
 		<plugins>
 			<plugin>
@@ -64,7 +85,8 @@
 				</executions>
 				<configuration>
 					<generateGitPropertiesFile>true</generateGitPropertiesFile>
-					<generateGitPropertiesFilename>${project.build.outputDirectory}/git.properties</generateGitPropertiesFilename>
+					<generateGitPropertiesFilename>${project.build.outputDirectory}/git.properties
+					</generateGitPropertiesFilename>
 					<failOnNoGitDirectory>false</failOnNoGitDirectory>
 					<failOnUnableToExtractRepoInfo>false</failOnUnableToExtractRepoInfo>
 				</configuration>
@@ -86,6 +108,7 @@
 						<filter>
 							<artifact>*:*</artifact>
 							<excludes>
+								<exclude>module-info.class</exclude>
 								<exclude>META-INF/*.SF</exclude>
 								<exclude>META-INF/*.DSA</exclude>
 								<exclude>META-INF/*.RSA</exclude>
@@ -471,5 +494,29 @@
 			<scope>test</scope>
 		</dependency>
 
+		<dependency>
+			<groupId>org.testcontainers</groupId>
+			<artifactId>testcontainers</artifactId>
+			<version>${testcontainers.version}</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.testcontainers</groupId>
+			<artifactId>postgresql</artifactId>
+			<version>${testcontainers.version}</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.testcontainers</groupId>
+			<artifactId>mysql</artifactId>
+			<version>${testcontainers.version}</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.testcontainers</groupId>
+			<artifactId>mariadb</artifactId>
+			<version>${testcontainers.version}</version>
+			<scope>test</scope>
+		</dependency>
 	</dependencies>
 </project>
diff --git a/commafeed-server/src/test/java/com/commafeed/CommaFeedDropwizardAppExtension.java b/commafeed-server/src/test/java/com/commafeed/CommaFeedDropwizardAppExtension.java
index 9fba2322..332105ae 100644
--- a/commafeed-server/src/test/java/com/commafeed/CommaFeedDropwizardAppExtension.java
+++ b/commafeed-server/src/test/java/com/commafeed/CommaFeedDropwizardAppExtension.java
@@ -1,11 +1,21 @@
 package com.commafeed;
 
+import java.io.IOException;
+import java.io.InputStream;
 import java.sql.Connection;
 import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
 
 import javax.sql.DataSource;
 
 import org.mockserver.socket.PortFactory;
+import org.testcontainers.containers.JdbcDatabaseContainer;
+import org.testcontainers.containers.MariaDBContainer;
+import org.testcontainers.containers.MySQLContainer;
+import org.testcontainers.containers.PostgreSQLContainer;
 
 import com.codahale.metrics.MetricRegistry;
 
@@ -14,10 +24,57 @@ import io.dropwizard.testing.ResourceHelpers;
 import io.dropwizard.testing.junit5.DropwizardAppExtension;
 
 public class CommaFeedDropwizardAppExtension extends DropwizardAppExtension<CommaFeedConfiguration> {
+	private static final String TEST_DATABASE = System.getenv().getOrDefault("TEST_DATABASE", "h2");
+
+	private static final ConfigOverride[] CONFIG_OVERRIDES;
+	private static final List<String> DROP_ALL_STATEMENTS;
+	static {
+		List<ConfigOverride> overrides = new ArrayList<>();
+		overrides.add(ConfigOverride.config("server.applicationConnectors[0].port", String.valueOf(PortFactory.findFreePort())));
+
+		DatabaseConfiguration config = buildConfiguration(TEST_DATABASE);
+		JdbcDatabaseContainer<?> container = config.container();
+		if (container != null) {
+			container.withDatabaseName("commafeed");
+			container.withEnv("TZ", "UTC");
+			container.start();
+
+			overrides.add(ConfigOverride.config("database.url", container.getJdbcUrl()));
+			overrides.add(ConfigOverride.config("database.user", container.getUsername()));
+			overrides.add(ConfigOverride.config("database.password", container.getPassword()));
+			overrides.add(ConfigOverride.config("database.driverClass", container.getDriverClassName()));
+		}
+
+		CONFIG_OVERRIDES = overrides.toArray(new ConfigOverride[0]);
+		DROP_ALL_STATEMENTS = config.dropAllStatements();
+	}
 
 	public CommaFeedDropwizardAppExtension() {
-		super(CommaFeedApplication.class, ResourceHelpers.resourceFilePath("config.test.yml"),
-				ConfigOverride.config("server.applicationConnectors[0].port", String.valueOf(PortFactory.findFreePort())));
+		super(CommaFeedApplication.class, ResourceHelpers.resourceFilePath("config.test.yml"), CONFIG_OVERRIDES);
+	}
+
+	private static DatabaseConfiguration buildConfiguration(String databaseName) {
+		Properties properties = new Properties();
+		try (InputStream is = CommaFeedDropwizardAppExtension.class.getResourceAsStream("/docker-images.properties")) {
+			properties.load(is);
+		} catch (IOException e) {
+			throw new RuntimeException("could not read docker-images.properties", e);
+		}
+
+		String imageName = properties.getProperty(databaseName);
+		if ("postgresql".equals(databaseName)) {
+			JdbcDatabaseContainer<?> container = new PostgreSQLContainer<>(imageName).withTmpFs(Map.of("/var/lib/postgresql/data", "rw"));
+			return new DatabaseConfiguration(container, List.of("DROP SCHEMA public CASCADE", "CREATE SCHEMA public"));
+		} else if ("mysql".equals(databaseName)) {
+			JdbcDatabaseContainer<?> container = new MySQLContainer<>(imageName).withTmpFs(Map.of("/var/lib/mysql", "rw"));
+			return new DatabaseConfiguration(container, List.of("DROP DATABASE IF EXISTS commafeed", " CREATE DATABASE commafeed"));
+		} else if ("mariadb".equals(databaseName)) {
+			JdbcDatabaseContainer<?> container = new MariaDBContainer<>(imageName).withTmpFs(Map.of("/var/lib/mysql", "rw"));
+			return new DatabaseConfiguration(container, List.of("DROP DATABASE IF EXISTS commafeed", " CREATE DATABASE commafeed"));
+		} else {
+			// h2
+			return new DatabaseConfiguration(null, List.of("DROP ALL OBJECTS"));
+		}
 	}
 
 	@Override
@@ -27,10 +84,15 @@ public class CommaFeedDropwizardAppExtension extends DropwizardAppExtension<Comm
 		// clean database after each test
 		DataSource dataSource = getConfiguration().getDataSourceFactory().build(new MetricRegistry(), "cleanup");
 		try (Connection connection = dataSource.getConnection()) {
-			connection.prepareStatement("DROP ALL OBJECTS").executeUpdate();
+			for (String statement : DROP_ALL_STATEMENTS) {
+				connection.prepareStatement(statement).executeUpdate();
+			}
 		} catch (SQLException e) {
 			throw new RuntimeException("could not cleanup database", e);
 		}
 	}
 
+	private record DatabaseConfiguration(JdbcDatabaseContainer<?> container, List<String> dropAllStatements) {
+	}
+
 }
diff --git a/commafeed-server/src/test/java/com/commafeed/integration/rest/FeedIT.java b/commafeed-server/src/test/java/com/commafeed/integration/rest/FeedIT.java
index f8c35994..c5c6c2a5 100644
--- a/commafeed-server/src/test/java/com/commafeed/integration/rest/FeedIT.java
+++ b/commafeed-server/src/test/java/com/commafeed/integration/rest/FeedIT.java
@@ -112,10 +112,11 @@ class FeedIT extends BaseIT {
 
 		@Test
 		void markInsertedBeforeBeforeSubscription() {
-			Instant insertedBefore = Instant.now();
+			// mariadb/mysql timestamp precision is 1 second
+			Instant threshold = Instant.now().minus(Duration.ofSeconds(1));
 
 			long subscriptionId = subscribeAndWaitForEntries(getFeedUrl());
-			markFeedEntries(subscriptionId, null, insertedBefore);
+			markFeedEntries(subscriptionId, null, threshold);
 			Assertions.assertTrue(getFeedEntries(subscriptionId).getEntries().stream().noneMatch(Entry::isRead));
 		}
 
@@ -123,9 +124,10 @@ class FeedIT extends BaseIT {
 		void markInsertedBeforeAfterSubscription() {
 			long subscriptionId = subscribeAndWaitForEntries(getFeedUrl());
 
-			Instant insertedBefore = Instant.now();
+			// mariadb/mysql timestamp precision is 1 second
+			Instant threshold = Instant.now().plus(Duration.ofSeconds(1));
 
-			markFeedEntries(subscriptionId, null, insertedBefore);
+			markFeedEntries(subscriptionId, null, threshold);
 			Assertions.assertTrue(getFeedEntries(subscriptionId).getEntries().stream().allMatch(Entry::isRead));
 		}
 
@@ -144,26 +146,29 @@ class FeedIT extends BaseIT {
 		void refresh() {
 			Long subscriptionId = subscribeAndWaitForEntries(getFeedUrl());
 
-			Instant now = Instant.now();
+			// mariadb/mysql timestamp precision is 1 second
+			Instant threshold = Instant.now().minus(Duration.ofSeconds(1));
+
 			IDRequest request = new IDRequest();
 			request.setId(subscriptionId);
 			getClient().target(getApiBaseUrl() + "feed/refresh").request().post(Entity.json(request), Void.TYPE);
 
 			Awaitility.await()
 					.atMost(Duration.ofSeconds(15))
-					.until(() -> getSubscription(subscriptionId), f -> f.getLastRefresh().isAfter(now));
+					.until(() -> getSubscription(subscriptionId), f -> f.getLastRefresh().isAfter(threshold));
 		}
 
 		@Test
 		void refreshAll() {
 			Long subscriptionId = subscribeAndWaitForEntries(getFeedUrl());
 
-			Instant now = Instant.now();
+			// mariadb/mysql timestamp precision is 1 second
+			Instant threshold = Instant.now().minus(Duration.ofSeconds(1));
 			getClient().target(getApiBaseUrl() + "feed/refreshAll").request().get(Void.TYPE);
 
 			Awaitility.await()
 					.atMost(Duration.ofSeconds(15))
-					.until(() -> getSubscription(subscriptionId), f -> f.getLastRefresh().isAfter(now));
+					.until(() -> getSubscription(subscriptionId), f -> f.getLastRefresh().isAfter(threshold));
 		}
 	}
 
diff --git a/commafeed-server/src/test/resources/config.test.yml b/commafeed-server/src/test/resources/config.test.yml
index 3768ab03..e67b9ac8 100644
--- a/commafeed-server/src/test/resources/config.test.yml
+++ b/commafeed-server/src/test/resources/config.test.yml
@@ -117,6 +117,9 @@ database:
   properties:
     charSet: UTF-8
   validationQuery: "/* CommaFeed Health Check */ SELECT 1"
+  minSize: 1
+  maxSize: 5
+  initialSize: 1
 
 server:
   applicationConnectors:
diff --git a/commafeed-server/src/test/resources/docker-images.properties b/commafeed-server/src/test/resources/docker-images.properties
new file mode 100644
index 00000000..c022ecd7
--- /dev/null
+++ b/commafeed-server/src/test/resources/docker-images.properties
@@ -0,0 +1,3 @@
+postgresql=postgres:${postgresql.image.version}
+mysql=mysql:${mysql.image.version}
+mariadb=mariadb:${mariadb.image.version}