🐳 Add Docker Image

.env.example

@@ -0,0 +1,10 @@
+USERLI_TOKEN=insecure
+USERLI_BASE_URL=http://localhost:8000
+ALIAS_LISTEN_ADDR=":10001"
+DOMAIN_LISTEN_ADDR=":10002"
+MAILBOX_LISTEN_ADDR=":10003"
+SENDERS_LISTEN_ADDR=":10004"
+METRICS_LISTEN_ADDR=":10005"
+
+LOG_LEVEL=debug
+LOG_FORMAT=text

.github/dependabot.yml

@@ -14,3 +14,8 @@ updates:
     directory: "/"
     schedule:
       interval: "monthly"
+
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "monthly"

.github/workflows/integration.yml

@@ -43,3 +43,6 @@ jobs:
 
       - name: Build
         run: go build
+
+      - name: Docker Build
+        run: docker build .

.gitignore

@@ -0,0 +1 @@
+.env

Dockerfile

@@ -0,0 +1,36 @@
+FROM golang:1.23-alpine3.19 AS build
+
+ENV USER=appuser
+ENV UID=10001
+
+RUN adduser \
+    --disabled-password \
+    --gecos "" \
+    --home "/nonexistent" \
+    --shell "/sbin/nologin" \
+    --no-create-home \
+    --uid "${UID}" \
+    "${USER}"
+
+WORKDIR /app
+
+COPY go.mod go.sum ./
+
+RUN go mod download && go mod verify
+
+COPY . .
+
+RUN go build -ldflags="-s -w" -o ./userli-postfix-adapter
+
+
+FROM scratch AS runtime
+
+COPY --from=build /app/userli-postfix-adapter /userli-postfix-adapter
+
+COPY --from=build /etc/passwd /etc/passwd
+COPY --from=build /etc/group /etc/group
+COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+
+USER appuser:appuser
+
+ENTRYPOINT ["/userli-postfix-adapter"]

docker-compose.yml

@@ -0,0 +1,13 @@
+---
+services:
+  adapter:
+    image: systemli/userli-postfix-adapter
+    build: .
+    ports:
+      - "10001:10001"
+      - "10002:10002"
+      - "10003:10003"
+      - "10004:10004"
+      - "10005:10005"
+    env_file:
+      - .env