KEYCLOAK-12054 Use multi-stage builds

.gitignore

@@ -17,10 +17,6 @@ tmp
 # HTML file from test coverage
 *.html
 
-# Temporary Build Files
-build/_output
-build/_test
-
 # Temporary e2e Test Files
 deploy/empty-init.yaml
 

Dockerfile

@@ -0,0 +1,27 @@
+FROM registry.access.redhat.com/ubi8/ubi-minimal:latest AS build-env
+
+RUN microdnf install -y git make golang
+
+ADD ./ /src
+RUN cd /src && make code/compile
+RUN cd /src && echo "Build SHA1: $(git rev-parse HEAD)"
+RUN cd /src && echo "$(git rev-parse HEAD)" > /src/BUILD_INFO
+
+# final stage
+FROM registry.access.redhat.com/ubi8/ubi-minimal:latest
+
+ENV OPERATOR=/usr/local/bin/keycloak-operator \
+    USER_UID=1001 \
+    USER_NAME=keycloak-operator
+
+RUN microdnf update && microdnf clean all && rm -rf /var/cache/yum/*
+
+COPY build/bin /usr/local/bin
+RUN  /usr/local/bin/user_setup
+
+COPY --from=build-env /src/BUILD_INFO /src/BUILD_INFO
+COPY --from=build-env /src/tmp/_output/bin/keycloak-operator /usr/local/bin
+
+ENTRYPOINT ["/usr/local/bin/entrypoint"]
+
+USER ${USER_UID}

build/Dockerfile

@@ -0,0 +1 @@
+../Dockerfile