build: add Docker image

.goreleaser.yaml

@@ -1,6 +1,16 @@
 builds:
   - skip: true
 
+dockers:
+  - image_templates:
+      - "ctferio/{{ .ProjectName }}:latest"
+      - "ctferio/{{ .ProjectName }}:{{ .Tag }}"
+    build_flag_templates:
+      - "--label=org.opencontainers.image.created={{ .Date }}"
+      - "--label=org.opencontainers.image.title={{ .ProjectName }}"
+      - "--label=org.opencontainers.image.revision={{ .FullCommit }}"
+      - "--label=org.opencontainers.image.version={{ .Version }}"
+
 changelog:
   sort: asc
   filters:

Dockerfile

@@ -0,0 +1,18 @@
+# Build stage
+FROM golang:1.22.1 AS builder
+
+WORKDIR /go/src
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . .
+
+ENV CGO_ENABLED=0
+RUN go build -o /go/bin/ctfd-setup cmd/ctfd-setup/main.go
+
+
+
+# Prod stage
+FROM scratch
+COPY --from=builder /go/bin/ctfd-setup /ctfd-setup
+ENTRYPOINT [ "/ctfd-setup" ]