add variable in Dockerfile to prepare renovate integration

Dockerfile

@@ -1,9 +1,22 @@
 # Build the k6 binary with the extension
 FROM golang:1.23.4 as builder
 
-RUN go install go.k6.io/xk6/cmd/xk6@latest
-RUN xk6 build --output /k6 --with github.com/GhMartingit/[email protected] --with github.com/grafana/[email protected] --with github.com/grafana/[email protected] --with github.com/grafana/[email protected] --with github.com/grafana/[email protected]
+ENV GRAFANA_K6_VERSION="0.56.0"
+ENV XK6_MONGO_VERSION="0.1.3"
+ENV XK6_SQL_DRIVER_POSTGRES_VERSION="0.1.0"
+ENV XK6_SQL_DRIVER_MYSQL_VERSION="0.1.0"
+ENV XK6_SQL_VERSION="1.0.1"
+ENV XK6_LOKI_VERSION="1.0.0"
+ENV XK6_BUILDER_VERSION="0.14.3"
+
+RUN go install go.k6.io/xk6/cmd/xk6@v${XK6_BUILDER_VERSION}
+RUN xk6 build --output /k6 \
+    --with github.com/GhMartingit/xk6-mongo@v${XK6_MONGO_VERSION}  \
+    --with github.com/grafana/xk6-sql-driver-postgres@v${XK6_SQL_DRIVER_POSTGRES_VERSION}  \
+    --with github.com/grafana/xk6-sql-driver-mysql@v${XK6_SQL_DRIVER_MYSQL_VERSION}  \
+    --with github.com/grafana/xk6-sql@v${XK6_SQL_VERSION}  \
+    --with github.com/grafana/xk6-loki@v${XK6_LOKI_VERSION}
 
 # Use the operator's base image and override the k6 binary
-FROM grafana/k6:0.56.0
+FROM grafana/k6:${GRAFANA_K6_VERSION}
 COPY --from=builder /k6 /usr/bin/k6