Increase default HEAP size to 1gb

Dockerfile.alpine

@@ -11,6 +11,6 @@ RUN set -ex && \
     rm /tmp/traccar.zip && \
     apk del wget
 
-ENTRYPOINT ["java", "-Xms512m", "-Xmx512m", "-Djava.net.preferIPv4Stack=true"]
+ENTRYPOINT ["java", "-Xms1g", "-Xmx1g", "-Djava.net.preferIPv4Stack=true"]
 
 CMD ["-jar", "tracker-server.jar", "conf/traccar.xml"]

Dockerfile.debian

@@ -13,6 +13,6 @@ RUN set -ex && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/* /tmp/*
 
-ENTRYPOINT ["java", "-Xms512m", "-Xmx512m", "-Djava.net.preferIPv4Stack=true"]
+ENTRYPOINT ["java", "-Xms1g", "-Xmx1g", "-Djava.net.preferIPv4Stack=true"]
 
 CMD ["-jar", "tracker-server.jar", "conf/traccar.xml"]

Dockerfile.ubuntu

@@ -13,6 +13,6 @@ RUN set -ex && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/* /tmp/*
 
-ENTRYPOINT ["java", "-Xms512m", "-Xmx512m", "-Djava.net.preferIPv4Stack=true"]
+ENTRYPOINT ["java", "-Xms1g", "-Xmx1g", "-Djava.net.preferIPv4Stack=true"]
 
 CMD ["-jar", "tracker-server.jar", "conf/traccar.xml"]

README.md

@@ -76,6 +76,6 @@ The `docker run` command also doesn't create a mount point on the host for the d
 The **recommended solution** for production use is to link to an external MySQL database and update the configuration `.xml`-file according to the [Traccar MySQL documentation](https://www.traccar.org/mysql/) and using the `docker run` command as-is.
 
 ## Default JVM options:
-- -Xms512m
-- -Xmx512m
-- -Djava.net.preferIPv4Stack=true
+- `-Xms1g`
+- `-Xmx1g`
+- `-Djava.net.preferIPv4Stack=true`