diff --git a/src/docker/Dockerfile b/src/docker/Dockerfile
index 3e8c8ba..c37c0b0 100644
--- a/src/docker/Dockerfile
+++ b/src/docker/Dockerfile
@@ -65,7 +65,14 @@ RUN set -eux; \
         libxml2-dev libzip-dev zlib1g-dev; \
     docker-php-ext-configure gd --with-freetype --with-jpeg --with-webp; \
     docker-php-ext-install -j"$(nproc)" bcmath exif gd intl mbstring pcntl pdo_mysql pdo_pgsql zip; \
-    pecl install redis memcached rdkafka; \
+    # One extension per call with retries: pecl does not fail when one of several packages fails
+    for ext in redis memcached rdkafka; do \
+        n=0; \
+        until pecl install -f "$ext" && [ -f "$(php-config --extension-dir)/$ext.so" ]; do \
+            n=$((n + 1)); [ "$n" -ge 3 ] && { echo "pecl install $ext failed"; exit 1; }; \
+            sleep 10; \
+        done; \
+    done; \
     docker-php-ext-enable redis memcached rdkafka; \
     # OPcache is always compiled in since PHP 8.5
     if ! php -m | grep -qi '^zend opcache$'; then docker-php-ext-install opcache; fi; \
diff --git a/src/docker/Dockerfile.alpine b/src/docker/Dockerfile.alpine
index aad556c..c51e18d 100644
--- a/src/docker/Dockerfile.alpine
+++ b/src/docker/Dockerfile.alpine
@@ -51,7 +51,14 @@ RUN set -eux; \
         libxml2-dev libzip-dev zlib-dev cyrus-sasl-dev linux-headers; \
     docker-php-ext-configure gd --with-freetype --with-jpeg --with-webp; \
     docker-php-ext-install -j"$(nproc)" bcmath exif gd intl mbstring pcntl pdo_mysql pdo_pgsql zip; \
-    pecl install redis memcached rdkafka; \
+    # One extension per call with retries: pecl does not fail when one of several packages fails
+    for ext in redis memcached rdkafka; do \
+        n=0; \
+        until pecl install -f "$ext" && [ -f "$(php-config --extension-dir)/$ext.so" ]; do \
+            n=$((n + 1)); [ "$n" -ge 3 ] && { echo "pecl install $ext failed"; exit 1; }; \
+            sleep 10; \
+        done; \
+    done; \
     docker-php-ext-enable redis memcached rdkafka; \
     # OPcache is always compiled in since PHP 8.5
     if ! php -m | grep -qi '^zend opcache$'; then docker-php-ext-install opcache; fi; \
diff --git a/tests/integration.sh b/tests/integration.sh
index efd3cec..8f15c38 100755
--- a/tests/integration.sh
+++ b/tests/integration.sh
@@ -21,7 +21,7 @@ docker run --rm "$IMAGE" php -m > modules.txt
 for ext in bcmath exif gd intl mbstring memcached pcntl pdo_mysql pdo_pgsql rdkafka redis zip "Zend OPcache"; do
     grep -qx "$ext" modules.txt || { echo "Missing extension: $ext"; exit 1; }
 done
-if docker run --rm "$IMAGE" php -m 2>&1 | grep -iE 'warning|unable to load'; then
+if docker run --rm "$IMAGE" sh -c 'php -m 2>&1' 2>/dev/null | grep -iE 'warning|unable to load'; then
     echo "PHP startup warnings detected"; exit 1
 fi
 rm -f modules.txt
@@ -50,7 +50,8 @@ echo "==> Running migrations"
 docker exec --user www-data php-fpm php artisan migrate --force
 
 echo "==> Checking HTTP response"
-code=$(curl -s -o /dev/null -w '%{http_code}' "http://localhost:$HTTP_PORT")
+# Request Nginx from inside the compose network so host port conflicts cannot interfere
+code=$(docker exec php-fpm curl -s -o /dev/null -w '%{http_code}' http://nginx-server)
 echo "HTTP $code"
 [ "$code" = "200" ]