diff --git a/theodolite-benchmarks/uc1-beam-samza/Dockerfile b/theodolite-benchmarks/uc1-beam-samza/Dockerfile
index 8519d68153d3341f2f680de6cd4662510c05ac98..30f4981b07de3aed07f2c39dce17859985677809 100644
--- a/theodolite-benchmarks/uc1-beam-samza/Dockerfile
+++ b/theodolite-benchmarks/uc1-beam-samza/Dockerfile
@@ -6,5 +6,10 @@ ENV ENABLE_METRICS=true
 ADD build/distributions/uc1-beam-samza.tar /
 ADD samza-standalone.properties /
 
-CMD /uc1-beam-samza/bin/uc1-beam-samza --configFilePath=samza-standalone.properties --samzaExecutionEnvironment=STANDALONE --maxSourceParallelism=$MAX_SOURCE_PARALLELISM --enableMetrics=$ENABLE_METRICS --configOverride="{\"job.coordinator.zk.connect\":\"$SAMZA_JOB_COORDINATOR_ZK_CONNECT\"}"
-
+CMD JAVA_OPTS="$JAVA_OPTS -Dorg.slf4j.simpleLogger.defaultLogLevel=$LOG_LEVEL" \
+    /uc1-beam-samza/bin/uc1-beam-samza \
+    --configFilePath=samza-standalone.properties \
+    --samzaExecutionEnvironment=STANDALONE \
+    --maxSourceParallelism=$MAX_SOURCE_PARALLELISM \
+    --enableMetrics=$ENABLE_METRICS \
+    --configOverride="{\"job.coordinator.zk.connect\":\"$SAMZA_JOB_COORDINATOR_ZK_CONNECT\"}"
diff --git a/theodolite-benchmarks/uc2-beam-samza/Dockerfile b/theodolite-benchmarks/uc2-beam-samza/Dockerfile
index f873ec8cba111e70dfdb29ae20dc4fbb2e7a9ecc..7d69fde4ff338b1bed2dbb6e951e0d63573c7841 100644
--- a/theodolite-benchmarks/uc2-beam-samza/Dockerfile
+++ b/theodolite-benchmarks/uc2-beam-samza/Dockerfile
@@ -6,4 +6,11 @@ ENV ENABLE_METRICS=true
 ADD build/distributions/uc2-beam-samza.tar /
 ADD samza-standalone.properties /
 
-CMD /uc2-beam-samza/bin/uc2-beam-samza --configFilePath=samza-standalone.properties --samzaExecutionEnvironment=STANDALONE --maxSourceParallelism=$MAX_SOURCE_PARALLELISM --enableMetrics=$ENABLE_METRICS --configOverride="{\"job.coordinator.zk.connect\":\"$SAMZA_JOB_COORDINATOR_ZK_CONNECT\"}"
+CMD JAVA_OPTS="$JAVA_OPTS -Dorg.slf4j.simpleLogger.defaultLogLevel=$LOG_LEVEL" \
+    /uc2-beam-samza/bin/uc2-beam-samza \
+    --configFilePath=samza-standalone.properties \
+    --samzaExecutionEnvironment=STANDALONE \
+    --maxSourceParallelism=$MAX_SOURCE_PARALLELISM \
+    --enableMetrics=$ENABLE_METRICS \
+    --configOverride="{\"job.coordinator.zk.connect\":\"$SAMZA_JOB_COORDINATOR_ZK_CONNECT\"}"
+
diff --git a/theodolite-benchmarks/uc3-beam-samza/Dockerfile b/theodolite-benchmarks/uc3-beam-samza/Dockerfile
index 02ac459e5197fc0d66bb0d70840a88d32d8084c3..781dd2eb1ec3ae8c373f1f12878fbc65f6491176 100644
--- a/theodolite-benchmarks/uc3-beam-samza/Dockerfile
+++ b/theodolite-benchmarks/uc3-beam-samza/Dockerfile
@@ -6,4 +6,11 @@ ENV ENABLE_METRICS=true
 ADD build/distributions/uc3-beam-samza.tar /
 ADD samza-standalone.properties /
 
-CMD /uc3-beam-samza/bin/uc3-beam-samza --configFilePath=samza-standalone.properties --samzaExecutionEnvironment=STANDALONE --maxSourceParallelism=$MAX_SOURCE_PARALLELISM --enableMetrics=$ENABLE_METRICS --configOverride="{\"job.coordinator.zk.connect\":\"$SAMZA_JOB_COORDINATOR_ZK_CONNECT\"}"
+
+CMD JAVA_OPTS="$JAVA_OPTS -Dorg.slf4j.simpleLogger.defaultLogLevel=$LOG_LEVEL" \
+    /uc3-beam-samza/bin/uc3-beam-samza \
+    --configFilePath=samza-standalone.properties \
+    --samzaExecutionEnvironment=STANDALONE \
+    --maxSourceParallelism=$MAX_SOURCE_PARALLELISM \
+    --enableMetrics=$ENABLE_METRICS \
+    --configOverride="{\"job.coordinator.zk.connect\":\"$SAMZA_JOB_COORDINATOR_ZK_CONNECT\"}"
diff --git a/theodolite-benchmarks/uc4-beam-samza/Dockerfile b/theodolite-benchmarks/uc4-beam-samza/Dockerfile
index 92a400d15d7726dc948cfd7df7e6e4ee7fd76812..9cee781f13d97c824b11f416e1b49255ef118baf 100644
--- a/theodolite-benchmarks/uc4-beam-samza/Dockerfile
+++ b/theodolite-benchmarks/uc4-beam-samza/Dockerfile
@@ -6,4 +6,10 @@ ENV ENABLE_METRICS=true
 ADD build/distributions/uc4-beam-samza.tar /
 ADD samza-standalone.properties /
 
-CMD /uc4-beam-samza/bin/uc4-beam-samza --configFilePath=samza-standalone.properties --samzaExecutionEnvironment=STANDALONE --maxSourceParallelism=$MAX_SOURCE_PARALLELISM --enableMetrics=$ENABLE_METRICS --configOverride="{\"job.coordinator.zk.connect\":\"$SAMZA_JOB_COORDINATOR_ZK_CONNECT\"}"
+CMD JAVA_OPTS="$JAVA_OPTS -Dorg.slf4j.simpleLogger.defaultLogLevel=$LOG_LEVEL" \
+    /uc4-beam-samza/bin/uc4-beam-samza \
+    --configFilePath=samza-standalone.properties \
+    --samzaExecutionEnvironment=STANDALONE \
+    --maxSourceParallelism=$MAX_SOURCE_PARALLELISM \
+    --enableMetrics=$ENABLE_METRICS \
+    --configOverride="{\"job.coordinator.zk.connect\":\"$SAMZA_JOB_COORDINATOR_ZK_CONNECT\"}"