Add GitHub Actions workflow and Dockerfile for Docker image deployment

app/Dockerfile

@@ -0,0 +1,36 @@
+FROM node:20.9-slim AS base
+ENV PNPM_HOME="/pnpm"
+ENV PATH="$PNPM_HOME:$PATH"
+RUN corepack enable
+
+FROM base AS build
+COPY . /usr/src/app
+WORKDIR /usr/src/app
+
+RUN apt-get update && rm -rf /var/lib/apt/lists/*
+
+# Install dependencies
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile
+
+# Deploy only the dokploy app
+ENV NODE_ENV=production
+RUN pnpm build
+
+FROM base AS dokploy
+WORKDIR /app
+
+# Set production
+ENV NODE_ENV=production
+
+# Copy only the necessary files
+COPY --from=build /usr/src/app/dist ./dist
+COPY --from=build /usr/src/app/package.json ./package.json
+COPY --from=build /usr/src/app/node_modules ./node_modules
+
+# Copy templates folder
+COPY ../templates ./public/templates
+
+# Expose port
+EXPOSE 3000
+
+CMD HOSTNAME=0.0.0.0 && pnpm start