diff --git a/README-fork.md b/README-fork.md
index 864ecdfc..529f7c19 100644
--- a/README-fork.md
+++ b/README-fork.md
@@ -9,8 +9,10 @@ This is my personal fork of `Athou/commafeed` with some tweaks:
 
 Use `gmfork-build-docker.sh` to build the JVM Docker image for `linux/amd64`:
 
+You can use the `DB_VARIANT` env var to change which DB the image builds with. By default, it builds the `postgresql` variant.
+
 ```sh
-DOCKER_REGISTRY=myregistry.example.com ./gmfork-build-docker.sh
+DOCKER_REGISTRY=myregistry.example.com DB_VARIANT=h2 ./gmfork-build-docker.sh
 ```
 
 To run locally:
diff --git a/gmfork-build-docker.sh b/gmfork-build-docker.sh
index ee2924ee..5e108e61 100755
--- a/gmfork-build-docker.sh
+++ b/gmfork-build-docker.sh
@@ -1,6 +1,7 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
+DB_VARIANT="${DB_VARIANT:-postgresql}"
 REPO_ROOT="$(cd "$(dirname "$0")" && pwd)"
 ARTIFACTS_DIR="$REPO_ROOT/artifacts"
 
@@ -11,14 +12,14 @@ fi
 
 # Build
 cd "$REPO_ROOT"
-./mvnw --batch-mode --no-transfer-progress install -Ph2 -DskipTests
+./mvnw --batch-mode --no-transfer-progress install -P${DB_VARIANT} -DskipTests
 
 # Prepare artifacts
 rm -rf "$ARTIFACTS_DIR"
 mkdir -p "$ARTIFACTS_DIR"
 
-cp commafeed-server/target/commafeed-*-jvm.zip "$ARTIFACTS_DIR/"
-unzip -q "$ARTIFACTS_DIR"/*-jvm.zip -d "$ARTIFACTS_DIR/extracted-jvm-package"
+cp commafeed-server/target/commafeed-*-${DB_VARIANT}-jvm.zip "$ARTIFACTS_DIR/"
+unzip -q "$ARTIFACTS_DIR"/*-${DB_VARIANT}-jvm.zip -d "$ARTIFACTS_DIR/extracted-jvm-package"
 mv "$ARTIFACTS_DIR/extracted-jvm-package"/commafeed-* "$ARTIFACTS_DIR/extracted-jvm-package/quarkus-app"
 
 # Build image