feat: add docker build

Author: KagChi

.github/workflows/docker.yml

@@ -0,0 +1,18 @@
+name: Build & Push to container registry
+
+on:
+  release:
+    types: [created]
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - "**"
+    paths:
+      - "Dockerfile"
+
+jobs:
+  docker:
+    uses: nezuchan/workflows/.github/workflows/docker-build.yml@main
+    secrets: inherit

Dockerfile

@@ -0,0 +1,23 @@
+FROM golang:1.21-alpine as build-stage
+
+WORKDIR /tmp/build
+
+COPY . .
+
+# Build the project
+RUN go build .
+
+FROM alpine:3
+
+LABEL name "Invoice Creator"
+LABEL maintainer "KagChi"
+
+WORKDIR /app
+
+# Install needed deps
+RUN apk add --no-cache tini
+
+COPY --from=build-stage /tmp/build/invoice-creator main
+
+ENTRYPOINT ["tini", "--"]
+CMD ["/app/main"]