add dockerfile

.dockerignore

@@ -0,0 +1,15 @@
+# Exclude Dockerfile and .dockerignore so that the docker layer cache won't be
+# invalidated after editing them (which changes the build context if they are
+# not ignored).
+*Dockerfile*
+.dockerignore
+# Exclude git metadata since we only care about the working tree.
+.git
+.gitattributes
+.gitignore
+# Exclude docs
+*.md
+
+*~
+*.o
+xkblayout-state

Dockerfile

@@ -0,0 +1,13 @@
+FROM alpine:3.14.2 AS build
+RUN apk add --no-cache g++ libx11-dev make
+WORKDIR /repo
+COPY . .
+RUN make
+# RUN make && chmod a+x ./xkblayout-state
+# Export to a minimal runtime image and run as an unprivileged user.
+FROM alpine:3.14.2
+RUN apk add --no-cache libstdc++ libx11
+USER 1000:1000
+WORKDIR /repo
+COPY --from=build --chown=1000:1000 /repo/xkblayout-state .
+ENTRYPOINT ["./xkblayout-state"]

README.md

@@ -17,6 +17,7 @@ Compilation and installation
 - To compile just say: `make`
 - To install copy the resulting executable `xkblayout-state` somewhere in your path
 
+Alternatively with docker: `docker build .`
 
 Usage
 -----