Fix build and dependencies

Dockerfile

@@ -43,7 +43,6 @@ RUN \
     php${PHP_VERSION}-cli \
     php${PHP_VERSION}-common \
     php${PHP_VERSION}-curl \
-    php${PHP_VERSION}-json \
     php${PHP_VERSION}-mbstring \
     php${PHP_VERSION}-mysql \
     php${PHP_VERSION}-sqlite3 \

Makefile

@@ -4,7 +4,7 @@ TARGET=Dockerfile
 build_8:
 	docker pull $(IMAGE):php8 || true; \
 	docker buildx build --rm . \
-		--load
+		--load \
 		-f $(TARGET) \
 		-t $(IMAGE):latest \
 		-t $(IMAGE):php8