Make Docker image command more flexible

Ideally, the application should automatically download the data on
startup if it detects that no data file has been passed. This will be
added in the future.

Dockerfile

@@ -24,3 +24,4 @@ WORKDIR /
 COPY --from=builder --chmod=+x /app/sxkcd /app/entrypoint.sh ./
 EXPOSE 6380
 ENTRYPOINT [ "/entrypoint.sh" ]
+CMD ["server", "-p", "6380", "-r", "redis:6379"]

README.md

@@ -28,9 +28,8 @@ Start your own instance of `sxkcd` with the provided `docker-compose.yml`:
 ```bash
 # download all comic data
 $ docker compose run \
-    --rm -d \
+    --rm \
     --no-deps \
-    --entrypoint "./sxkcd" \
     app download -f /data/comics.json
 
 $ docker-compose -d
@@ -84,9 +83,8 @@ Run with docker-compose:
 ```bash
 # download all comic data
 $ docker compose run \
-    --rm -d \
+    --rm \
     --no-deps \
-    --entrypoint "./sxkcd" \
     app download -f /data/comics.json
 
 $ docker-compose -d

docker-compose.yml

@@ -24,9 +24,12 @@ services:
     container_name: sxkcd
     hostname: sxkcd
     image: ghcr.io/kencx/sxkcd:latest
-    build: .
-    # uncomment on first startup
-    # command: ["-f", "/data/comics.json"]
+    build:
+      context: .
+      tags:
+        - latest
+    # run "docker compose run --rm app download -f /data/comics.json" prior to starting
+    command: ["server", "-p", "6380", "-r", "redis:6379", "-f", "/data/comics.json"]
     restart: unless-stopped
     ports:
       - "6380:6380"

entrypoint.sh

@@ -1,3 +1,3 @@
 #!/bin/sh
 
-exec ./sxkcd server -p 6380 -r redis:6379 "$@"
+exec ./sxkcd "$@"