add Dockerfile & Justfile

Dockerfile

@@ -0,0 +1,24 @@
+FROM golang:1.25 AS builder
+
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y \
+    gcc \
+    libc6-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . .
+
+RUN CGO_ENABLED=1 go build -ldflags="-linkmode external -extldflags '-static' -s -w" -o podcaster .
+
+FROM scratch
+
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+COPY --from=builder /app/podcaster /podcaster
+
+EXPOSE 5000
+
+ENTRYPOINT ["/podcaster"]

Justfile

@@ -0,0 +1,5 @@
+build:
+  docker build -t podcaster .
+
+run:
+  docker run -p 5000:5000 --name podcaster -v ./db:/db -v ./podcasts:/podcasts podcaster:latest