add Litestream to container

.env.example

···
 ADMIN_PASSWORD="me"
 
 JWT_SECRET="bogus"
+
+AWS_ACCESS_KEY_ID=
+AWS_SECRET_ACCESS_KEY=
+AWS_S3_BUCKET_NAME=
+AWS_S3_ENDPOINT=fly.storage.tigris.dev
+AWS_REGION=auto

.gitattributes

···
+*.sh text eol=lf

Dockerfile

···
 COPY . /app
 
 RUN go mod download
-RUN mkdir data
-RUN mkdir data/docs
 
-RUN CGO_ENABLED=0 GOOS=linux go build -o /space
+ENV CGO_ENABLED=0
+ENV GOOS=linux
+RUN go build -ldflags '-s -w -extldflags "-static"' -tags osusergo,netgo,sqlite_omit_load_extension -o /space
 
-FROM scratch
+ADD https://github.com/benbjohnson/litestream/releases/download/v0.3.13/litestream-v0.3.13-linux-amd64.tar.gz /tmp/litestream.tar.gz
+RUN tar -C /usr/local/bin -xzf /tmp/litestream.tar.gz
+
+FROM alpine
 WORKDIR /
+
 COPY --from=build-styles /app/static /static
-COPY --from=build-server /app/data /data
 COPY --from=build-server /space /space
+COPY --from=build-server /usr/local/bin/litestream /usr/local/bin/litestream
+
+RUN apk add bash
+RUN mkdir -p /data
+
+COPY etc/litestream.yml /etc/litestream.yml
+COPY scripts/run.sh /scripts/run.sh
+
 EXPOSE 80
-ENTRYPOINT ["/space"]
+
+COPY etc/litestream.yml /etc/litestream.yml
+COPY scripts/run.sh /scripts/run.sh
+
+CMD [ "/scripts/run.sh" ]

etc/litestream.yml

···
+dbs:
+  - path: /data/data.db
+    replicas:
+      # - url: ${REPLICA_URL}
+      - type: s3
+        bucket: ${AWS_S3_BUCKET_NAME}
+        endpoint: ${AWS_S3_ENDPOINT}
+        path: db
+        force-path-style: true

scripts/run.sh

···
+#!/bin/bash
+set -e
+
+echo "Starting script"
+
+# Restore the database if it does not already exist.
+if [ -f /data/data.db ]; then
+	echo "Database already exists, skipping restore"
+else
+	echo "No database found, restoring from replica if exists"
+	litestream restore -if-replica-exists /data/data.db
+fi
+
+# Run litestream with your app as the subprocess.
+exec litestream replicate -exec "/space"