Multi-stage container build for smaller image size

container/Containerfile

@@ -2,26 +2,39 @@
 # We use node:latest as the base image.
 # Essentially we build the frontend SPA with vite and 
 # make it available in the public directory.
-FROM docker.io/node:latest as client
+FROM docker.io/node:alpine as client
 WORKDIR /build
 ADD frontend /build
 RUN npm install
 RUN npm run build
 
 # Builds the server in an isolated stage
-FROM docker.io/golang:latest as go
+FROM docker.io/golang:alpine as go
+RUN apk add gcompat
+RUN apk add gcc
+RUN apk add musl-dev
 ADD backend /build
 WORKDIR /build
 
-# Copy the frontend SPA build into public
-COPY --from=client /build/dist /build/static
-
 # Get the dependencies
 RUN go mod download
 
 # RUN go build -o server
 RUN CGO_ENABLED=1 GOOS=linux go build -a -installsuffix cgo -o ./server ./cmd/
 
+# The final stage for building a minimal image
+FROM docker.io/alpine:latest as runner
+WORKDIR /app
+
+# Copy the frontend SPA build into public
+COPY --from=client /build/dist /app/static
+
+# Copy the server binary
+COPY --from=go /build/server /app/server
+
+# Copy the migration scripts
+COPY --from=go /build/migrations /app/migrations
+
 # Expose port 8080
 EXPOSE 8080