Sync upstream Dockerfile changes for 6.1.0

Bump ALPINE_VERSION to 3.21.2 and JAVA_OPTIONS default to 4096m to
match the upstream apache/jena Fuseki Dockerfile. Same changes applied
to Dockerfile.profiler for consistency.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: namedgraph

Dockerfile

@@ -19,7 +19,7 @@
 
 ARG JAVA_VERSION=21
 
-ARG ALPINE_VERSION=3.17.1
+ARG ALPINE_VERSION=3.21.2
 ARG JENA_VERSION=6.1.0
 
 # Internal, passed between stages.
@@ -113,12 +113,12 @@ RUN \
 ## Default environment variables.
 ENV \
     JAVA_HOME=${JAVA_MINIMAL}           \
-    JAVA_OPTIONS="-Xmx2048m -Xms2048m"  \
+    JAVA_OPTIONS="-Xmx4096m -Xms4096m"  \
     JENA_VERSION=${JENA_VERSION}        \
     FUSEKI_JAR="${FUSEKI_JAR}"          \
     FUSEKI_DIR="${FUSEKI_DIR}"
 
 EXPOSE 3030
 
 ENTRYPOINT ["./entrypoint.sh" ]
-CMD []
+CMD []

Dockerfile.profiler

@@ -18,7 +18,7 @@
 ## This Dockefile builds a reduced footprint container.
 
 ARG JAVA_VERSION=21
-ARG ALPINE_VERSION=3.15.0
+ARG ALPINE_VERSION=3.21.2
 ARG JENA_VERSION=6.1.0
 
 # Internal, passed between stages.
@@ -104,7 +104,7 @@ RUN \
 ## Default environment variables.
 ENV \
     #JAVA_HOME=${JAVA_MINIMAL}           \
-    JAVA_OPTIONS="-Xmx2048m -Xms2048m"  \
+    JAVA_OPTIONS="-Xmx4096m -Xms4096m"  \
     JENA_VERSION=${JENA_VERSION}        \
     FUSEKI_JAR="${FUSEKI_JAR}"          \
     FUSEKI_DIR="${FUSEKI_DIR}"