diff --git a/docker/Dockerfile.proxy b/docker/Dockerfile.proxy
index 41a8d34d..a47bbc5c 100644
--- a/docker/Dockerfile.proxy
+++ b/docker/Dockerfile.proxy
@@ -11,10 +11,10 @@ WORKDIR /code
 
 COPY . .
 
-RUN if [[ "${FIPS_MODE}" = "enabled" ]]; \
+RUN bash -c 'if [[ "${FIPS_MODE}" = "enabled" ]]; \
     then echo "building in fips mode"; make clean split-proxy-fips entrypoints EXTRA_BUILD_ARGS="${EXTRA_BUILD_ARGS}"; mv split-proxy-fips split-proxy; \
     else echo "building in standard mode"; make clean split-proxy entrypoints EXTRA_BUILD_ARGS="${EXTRA_BUILD_ARGS}"; \
-    fi
+    fi'
 
 # Runner stage
 FROM debian:12.4 AS runner
diff --git a/docker/Dockerfile.synchronizer b/docker/Dockerfile.synchronizer
index fbe3cd2b..350009a7 100644
--- a/docker/Dockerfile.synchronizer
+++ b/docker/Dockerfile.synchronizer
@@ -11,10 +11,10 @@ WORKDIR /code
 
 COPY . .
 
-RUN if [[ "${FIPS_MODE}" = "enabled" ]]; \
+RUN bash -c 'if [[ "${FIPS_MODE}" = "enabled" ]]; \
     then echo "building in fips mode"; make clean split-sync-fips entrypoints EXTRA_BUILD_ARGS="${EXTRA_BUILD_ARGS}"; mv split-sync-fips split-sync; \
     else echo "building in standard mode"; make clean split-sync entrypoints EXTRA_BUILD_ARGS="${EXTRA_BUILD_ARGS}"; \
-    fi
+    fi'
 
 # Runner stage
 FROM debian:12.4 AS runner