Reduce final image size

.dockerignore

@@ -1,3 +1,4 @@
 /target
 /uploads
-/data
+/data
+Dockerfile

Dockerfile

@@ -1,7 +1,4 @@
-from rust:1.57.0
-
-env ROCKET_ADDRESS=0.0.0.0
-env ROCKET_PORT=3000
+from rust:1.57.0 as builder
 
 run cd /opt && USER=root cargo new --bin app
 workdir /opt/app
@@ -17,4 +14,11 @@ run cargo build-deps --release
 copy . .
 run cargo build --release
 
-cmd cargo run --release
+from rust:1.57.0-slim
+env ROCKET_ADDRESS=0.0.0.0
+env ROCKET_PORT=3000
+run apt-get update && apt install -y libgexiv2-dev && rm -rf /var/lib/apt/lists/*
+workdir /opt/app
+copy --from=builder /opt/app/target/release/tempest-tmp /opt/app/tempest-tmp
+copy ./ui ./ui
+cmd /opt/app/tempest-tmp