update Docker

Dockerfile

@@ -1,4 +1,4 @@
-FROM gcc:12.3 AS builder
+FROM gcc:12.3 AS build
 RUN apt-get update && apt-get install -y \
     catch2 \
     cmake && \
@@ -11,7 +11,17 @@ RUN make build && \
     make test && \
     make package
 
-FROM ubuntu:latest as tester
-COPY --from=builder /usr/local/src/templateapp/build/ /usr/local/src/templateapp/build/
-WORKDIR /usr/local/src/templateapp/build
+FROM scratch AS build-export
+COPY --from=build /usr/local/src/templateapp/build/templateapp-Linux.deb /
+WORKDIR /
+
+FROM ubuntu:latest AS test
+COPY --from=build /usr/local/src/templateapp/build/tests/integration/templateapp.i.t /usr/local/bin
+WORKDIR /usr/local/bin
+ENTRYPOINT [ "/usr/local/bin/templateapp.i.t" ]
+
+FROM ubuntu:latest AS run
+COPY --from=build /usr/local/src/templateapp/build/templateapp-Linux.deb /usr/local/bin
+WORKDIR /usr/local/bin
 RUN dpkg -i templateapp-Linux.deb
+ENTRYPOINT [ "/usr/bin/templateapp.sh" ]

README.md

@@ -3,27 +3,24 @@ Template C/C++ application
 
 ## Build
 ```
-docker build [--target builder] -t templateappcpp .
+docker build --target=build-export --output type=local,dest=./output .
 ```
 
 ## Test
 
 ### Unit
 ```
-docker build [--target builder] -t templateappcpp .
+docker build --target=build -t templateapp .
 ```
 
 ### Integration
 ```
-docker build [--target tester] -t templateappcpp .
-docker run -it --rm templateappcpp
-> ./tests/integration/templateapp.i.t
+docker build --target=test -t templateapp .
+docker run -it --rm templateapp
 ```
 
 ## Run
 ```
-docker run -it --rm templateappcpp
-> cd /usr/bin
-> ./templateapp.sh
-> ./templateapp
+docker build --target=run -t templateapp .
+docker run -it --rm templateapp
 ```