Use jemalloc in Docker builds (#85738)

Dockerfile

@@ -11,22 +11,45 @@ WORKDIR /usr/src
 COPY requirements.txt homeassistant/
 COPY homeassistant/package_constraints.txt homeassistant/homeassistant/
 RUN \
-    pip3 install --no-cache-dir --no-index --only-binary=:all: --find-links "${WHEELS_LINKS}" \
-    -r homeassistant/requirements.txt --use-deprecated=legacy-resolver
+    pip3 install \
+        --no-cache-dir \
+        --no-index \
+        --only-binary=:all: \
+        --find-links "${WHEELS_LINKS}" \
+        --use-deprecated=legacy-resolver \
+        -r homeassistant/requirements.txt
+
 COPY requirements_all.txt home_assistant_frontend-* homeassistant/
 RUN \
     if ls homeassistant/home_assistant_frontend*.whl 1> /dev/null 2>&1; then \
-        pip3 install --no-cache-dir --no-index homeassistant/home_assistant_frontend-*.whl; \
+        pip3 install \
+            --no-cache-dir \
+            --no-index \
+            homeassistant/home_assistant_frontend-*.whl; \
     fi \
-    && pip3 install --no-cache-dir --no-index --only-binary=:all: --find-links "${WHEELS_LINKS}" \
-    -r homeassistant/requirements_all.txt --use-deprecated=legacy-resolver
+    && \
+        LD_PRELOAD="/usr/local/lib/libjemalloc.so.2" \
+        MALLOC_CONF="background_thread:true,metadata_thp:auto,dirty_decay_ms:20000,muzzy_decay_ms:20000" \
+        pip3 install \
+            --no-cache-dir \
+            --no-index \
+            --only-binary=:all: \
+            --find-links "${WHEELS_LINKS}" \
+            --use-deprecated=legacy-resolver \
+            -r homeassistant/requirements_all.txt
 
 ## Setup Home Assistant Core
 COPY . homeassistant/
 RUN \
-    pip3 install --no-cache-dir --no-index --only-binary=:all: --find-links "${WHEELS_LINKS}" \
-    -e ./homeassistant --use-deprecated=legacy-resolver \
-    && python3 -m compileall homeassistant/homeassistant
+    pip3 install \
+        --no-cache-dir \
+        --no-index \
+        --only-binary=:all: \
+        --find-links "${WHEELS_LINKS}" \
+        --use-deprecated=legacy-resolver \
+        -e ./homeassistant \
+    && python3 -m compileall \
+        homeassistant/homeassistant
 
 # Home Assistant S6-Overlay
 COPY rootfs /