diff --git a/.dockerignore b/.dockerignore
index e4adc91..356433f 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -5,4 +5,5 @@
 /bin
 /misc/docker/Dockerfile
 /.env
-/.env.dist
\ No newline at end of file
+/.env.dist
+/tools
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 2a576f4..ddcc7ea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,5 @@
 /vendor
 /bin
 /node_modules
-/.env
\ No newline at end of file
+/.env
+/tools
\ No newline at end of file
diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..158c006
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+v14.16.0
diff --git a/Makefile b/Makefile
index 9c222f3..8d1422f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,14 @@
-DOCKER_DATE_TAG := $(shell date +%Y%m%d%H%M)
+DOCKER_DATE_TAG := $(shell date --utc +%Y.%-m.%-d%-H%-M)
+
+YQ_VERSION ?= v4.30.4
+YQ_BINARY ?= yq_linux_amd64
+
+tools: tools/yq/bin/yq
+
+tools/yq/bin/yq:
+	mkdir -p tools/yq/bin
+	wget https://github.com/mikefarah/yq/releases/download/${YQ_VERSION}/${YQ_BINARY} -O tools/yq/bin/yq &&\
+    chmod +x tools/yq/bin/yq
 
 build:
 	CGO_ENABLED=0 go build -v -o bin/fake-smtp ./cmd/fake-smtp
@@ -31,7 +41,7 @@ docker-release:
 test:
 	go test -v -race ./...
 
-release: dist
+release: dist tools
 	@./misc/script/release.sh
 
 dist:
diff --git a/misc/docker/Dockerfile b/misc/docker/Dockerfile
index f342298..c39f9b3 100644
--- a/misc/docker/Dockerfile
+++ b/misc/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.17 AS build
+FROM golang:1.19 AS build
 
 ARG HTTP_PROXY=
 ARG HTTPS_PROXY=
@@ -14,13 +14,8 @@ COPY . /src
 
 WORKDIR /src
 
-RUN cp -f misc/docker/config-patch.yml misc/release/config-patch.yml
-
-RUN go get github.com/krishicks/yaml-patch/cmd/yaml-patch
-
-RUN npm install \
-    && make vendor \
-    && echo "---" > ./misc/release/config-patch.yml \
+RUN cp -f misc/docker/config-patch.txt misc/release/config-patch.txt \
+    && npm install \
     && make ARCH_TARGETS=amd64 release
 
 FROM busybox
@@ -31,4 +26,6 @@ WORKDIR /app
 
 RUN mkdir -p /app
 
+EXPOSE 8080 2525
+
 CMD ["bin/fake-smtp", "--config", "config.yml"]
\ No newline at end of file
diff --git a/misc/docker/config-patch.txt b/misc/docker/config-patch.txt
new file mode 100644
index 0000000..62f7583
--- /dev/null
+++ b/misc/docker/config-patch.txt
@@ -0,0 +1 @@
+.smtp.debug = false
diff --git a/misc/docker/config-patch.yml b/misc/docker/config-patch.yml
deleted file mode 100644
index cf67519..0000000
--- a/misc/docker/config-patch.yml
+++ /dev/null
@@ -1,4 +0,0 @@
----
-- op: replace
-  path: /smtp/debug
-  value: false
\ No newline at end of file
diff --git a/misc/release/config-patch.txt b/misc/release/config-patch.txt
new file mode 100644
index 0000000..80b27ae
--- /dev/null
+++ b/misc/release/config-patch.txt
@@ -0,0 +1,3 @@
+.data.path = "/var/lib/fake-smtp/data.db"
+.smtp.address = "127.0.0.1:2525"
+.smtp.debug = false
diff --git a/misc/release/config-patch.yml b/misc/release/config-patch.yml
deleted file mode 100644
index cf62cd6..0000000
--- a/misc/release/config-patch.yml
+++ /dev/null
@@ -1,10 +0,0 @@
----
-- op: replace
-  path: /data/path
-  value: /var/lib/fake-smtp/data.db
-- op: replace
-  path: /smtp/address
-  value: 127.0.0.1:2525
-- op: replace
-  path: /smtp/debug
-  value: false
\ No newline at end of file
diff --git a/misc/script/release.sh b/misc/script/release.sh
index 9e9f20b..477a570 100755
--- a/misc/script/release.sh
+++ b/misc/script/release.sh
@@ -73,13 +73,17 @@ function dump_default_conf {
   local command=$1
   local os=$2
   local arch=$3
-  local tmp_conf=$(mktemp)
   local patched_conf=$(mktemp)
 
-  go run "$PROJECT_DIR/cmd/$command" -dump-config > "$tmp_conf"
-  cat "$tmp_conf" | yaml-patch -o misc/release/config-patch.yml > "$patched_conf"
+  go run "$PROJECT_DIR/cmd/$command" -dump-config > "$patched_conf"
+
+  while IFS= read -r yq_cmd; do
+    echo "patching configuration with '$yq_cmd'..."
+    tools/yq/bin/yq -i "$yq_cmd" "$patched_conf"
+  done < misc/release/config-patch.txt
+
   copy "$command" $os $arch "$patched_conf" "config.yml"
-  rm -f "$tmp_conf" "$patched_conf"
+  rm -f "$patched_conf"
 }
 
 function compress {