Dockerize the app

.dockerignore

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+.git/
+fme
+

Dockerfile

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+FROM golang:1.21 as builder
+
+WORKDIR /app
+
+# Copy the go.mod files first to leverage Docker cache
+COPY go.mod ./
+
+# Download the Go modules (including the one hosted on GitHub).
+RUN go mod download
+
+# Copy the rest of the application's source code.
+COPY . .
+
+# Build the application.
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o fme .
+
+# Use a Docker multi-stage build to create a lean production image.
+FROM alpine:latest
+
+
+# Set the working directory to /root/
+WORKDIR /root/
+
+# Copy the pre-built binary file from the previous stage.
+COPY --from=builder /app/fme .
+
+# Run the application.
+CMD ["./fme"]

README.md

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 # fme - future me
 
 This is a simple commandline utility that asks and saves to a text file a list of your goals.
+
+# Docker image
+
+To build Docker image, run in the project directory:
+`docker build -t fme:v1.0.0 .`
+
+To create a new container named my-fme-app:
+
+`docker run --name my-fme-app -it fme:v1.0.0`
+
+To run `my-fme-app` again, start the container in interactive mode:
+`docker container start -i my-fme-app`