feat: Add dev docker setup

Makefile

@@ -84,3 +84,32 @@ release-dry:
 .PHONY: release
 release:
 	goreleaser --parallelism 1 --rm-dist --skip-validate
+
+# Build local docker images for development.
+.PHONY: build-dev-docker
+build-dev-docker: build ## Build docker containers for the entire suite (Front/Core/PG).
+	cd dev; \
+	docker-compose build ; \
+
+# Spin a local docker suite for local development.
+.PHONY: dev-docker
+dev-docker: build-dev-docker ## Build and spawns docker containers for the entire suite (Front/Core/PG).
+	cd dev; \
+	docker-compose up
+
+# Run the backend in docker-dev mode. The frontend assets in dev mode are loaded from disk from frontend/dist.
+.PHONY: run-backend-docker
+run-backend-docker:
+	CGO_ENABLED=0 go run -ldflags="-s -w -X 'main.buildString=${BUILDSTR}' -X 'main.versionString=${VERSION}' -X 'main.frontendDir=frontend/dist'" cmd/*.go --config=dev/config.toml
+
+# Tear down the complete local development docker suite.
+.PHONY: rm-dev-docker
+rm-dev-docker: build ## Delete the docker containers including DB volumes.
+	cd dev; \
+	docker-compose down -v ; \
+
+# Setup the db for local dev docker suite.
+.PHONY: init-dev-docker
+init-dev-docker: build-dev-docker ## Delete the docker containers including DB volumes.
+	cd dev; \
+	docker-compose run --rm backend sh -c "make dist && yes | ./listmonk --install --config dev/config.toml"

dev/README.md

@@ -0,0 +1,43 @@
+# Docker suite for development
+
+**NOTE**: This exists only for local development. If you're interested in using Docker for a production setup, visit the [docs](https://listmonk.app/docs/installation/#docker) instead.
+
+### Objective
+
+The purpose of this docker suite for local development is to isolate all the dev dependencies in a docker environment. The containers have a host volume mounted inside for the entire app directory. This helps us to not do a full `docker build` for every single local change, only restarting the docker environment is enough.
+
+## Setting up a dev suite
+
+To spin up a local suite of
+
+- PostgreSQL
+- Mailhog
+- Node.js frontend app
+- Golang backend app
+
+### Setup DB
+
+```bash
+make init-dev-docker
+```
+
+### Start frontend and backend apps
+
+```bash
+make dev-docker
+```
+
+Visit `http://localhost:8080` on your browser.
+
+### Tear down
+
+This will tear down all the data, including DB.
+
+```bash
+make rm-dev-docker
+```
+
+### See local changes in action
+
+- Backend: Anytime you do a change to the Go app, it needs to be compiled. Just run `make dev-docker` again and that should automatically handle it for you.
+- Frontend: Anytime you change the frontend code, you don't need to do anything. Since `yarn` is watching for all the changes and we have mounted the code inside the docker container, `yarn` server automatically restarts.

dev/app.Dockerfile

@@ -0,0 +1,11 @@
+FROM golang:1.17 AS go
+
+FROM node:16 AS node
+
+COPY --from=go /usr/local/go /usr/local/go
+ENV GOPATH /go
+ENV CGO_ENABLED=0
+ENV PATH $GOPATH/bin:/usr/local/go/bin:$PATH
+
+WORKDIR /app
+ENTRYPOINT [ "" ]

dev/docker-compose.yml

@@ -0,0 +1,61 @@
+version: "3"
+
+services:
+  mailhog:
+    image: mailhog/mailhog:v1.0.1
+    ports:
+      - "1025:1025" # SMTP
+      - "8025:8025" # UI
+
+  db:
+    image: postgres:13
+    ports:
+      - "5432:5432"
+    networks:
+      - listmonk-dev
+    environment:
+      - POSTGRES_PASSWORD=listmonk-dev
+      - POSTGRES_USER=listmonk-dev
+      - POSTGRES_DB=listmonk-dev
+    restart: unless-stopped
+    volumes:
+      - type: volume
+        source: listmonk-dev-db
+        target: /var/lib/postgresql/data
+
+  front:
+    build:
+      context: ../
+      dockerfile: dev/app.Dockerfile
+    command: ["make", "run-frontend"]
+    ports:
+      - "8080:8080"
+    environment:
+      - LISTMONK_API_URL=http://backend:9000
+    depends_on:
+      - db
+    volumes:
+      - ../:/app
+    networks:
+      - listmonk-dev
+
+  backend:
+    build:
+      context: ../
+      dockerfile: dev/app.Dockerfile
+    command: ["make", "run-backend-docker"]
+    ports:
+      - "9000:9000"
+    depends_on:
+      - db
+    volumes:
+      - ../:/app
+      - $GOPATH/pkg/mod/cache:/go/pkg/mod/cache
+    networks:
+      - listmonk-dev
+
+volumes:
+  listmonk-dev-db:
+
+networks:
+  listmonk-dev: