Add docu about image size (#140)

.github/print-size.sh

@@ -0,0 +1,21 @@
+export VERSION=$(mvn help:evaluate -Dexpression=version.org.keycloak -DforceStdout -q)
+export REDHAT_RUNTIME=quay.io/keycloak/keycloak:$VERSION
+export TEMURIN_RUNTIME=docker.io/kokuwaio/keycloak:$VERSION
+export TEMURIN_IMPORT=docker.io/kokuwaio/keycloak:$VERSION-import
+export DISTROLESS_RUNTIME=docker.io/kokuwaio/keycloak:$VERSION-distroless
+export DISTROLESS_IMPORT=docker.io/kokuwaio/keycloak:$VERSION-distroless-import
+
+docker pull --quiet=true $REDHAT_RUNTIME &
+docker pull --quiet=true $TEMURIN_RUNTIME &
+docker pull --quiet=true $TEMURIN_IMPORT &
+docker pull --quiet=true $DISTROLESS_RUNTIME &
+docker pull --quiet=true $DISTROLESS_IMPORT &
+wait
+
+printf "\n| image                                                | uncompressed      | compressed        |\n"
+printf "|------------------------------------------------------|-------------------|-------------------|\n"
+printf "| %-52s | %'11d bytes | %'11d bytes |\n" $REDHAT_RUNTIME     $(docker image inspect $REDHAT_RUNTIME     --format='{{.Size}}') $(docker manifest inspect -v $REDHAT_RUNTIME     | jq '.[] | select(.Descriptor.platform.architecture == "amd64").OCIManifest.layers[].size' | tr '\n' '+' | cat - <(echo "0") | bc)
+printf "| %-52s | %'11d bytes | %'11d bytes |\n" $TEMURIN_RUNTIME    $(docker image inspect $TEMURIN_RUNTIME    --format='{{.Size}}') $(docker manifest inspect -v $TEMURIN_RUNTIME    | jq '.[] | select(.Descriptor.platform.architecture == "amd64").OCIManifest.layers[].size' | tr '\n' '+' | cat - <(echo "0") | bc)
+printf "| %-52s | %'11d bytes | %'11d bytes |\n" $TEMURIN_IMPORT     $(docker image inspect $TEMURIN_IMPORT     --format='{{.Size}}') $(docker manifest inspect -v $TEMURIN_IMPORT     | jq '.[] | select(.Descriptor.platform.architecture == "amd64").OCIManifest.layers[].size' | tr '\n' '+' | cat - <(echo "0") | bc)
+printf "| %-52s | %'11d bytes | %'11d bytes |\n" $DISTROLESS_RUNTIME $(docker image inspect $DISTROLESS_RUNTIME --format='{{.Size}}') $(docker manifest inspect -v $DISTROLESS_RUNTIME | jq '.[] | select(.Descriptor.platform.architecture == "amd64").OCIManifest.layers[].size' | tr '\n' '+' | cat - <(echo "0") | bc)
+printf "| %-52s | %'11d bytes | %'11d bytes |\n" $DISTROLESS_IMPORT  $(docker image inspect $DISTROLESS_IMPORT  --format='{{.Size}}') $(docker manifest inspect -v $DISTROLESS_IMPORT  | jq '.[] | select(.Descriptor.platform.architecture == "amd64").OCIManifest.layers[].size' | tr '\n' '+' | cat - <(echo "0") | bc)

README.md

@@ -57,6 +57,21 @@ Tags:
 - all tags are available with suffix `-import` for realm import without cache
 - all tags are available with suffix `-temurin` or `-distroless` for specific base images
 
+## Sizes
+
+Created with [print-size.sh](/.github/print-size.sh): `.github/print-size.sh`
+
+| image                                                | uncompressed      | compressed        |
+|------------------------------------------------------|-------------------|-------------------|
+| quay.io/keycloak/keycloak:23.0.1                     | 459.018.503 bytes | 262.181.076 bytes |
+| docker.io/kokuwaio/keycloak:23.0.1                   | 446.125.014 bytes | 256.232.904 bytes |
+| docker.io/kokuwaio/keycloak:23.0.1-import            | 446.043.228 bytes | 256.160.692 bytes |
+| docker.io/kokuwaio/keycloak:23.0.1-distroless        | 403.345.214 bytes | 254.675.552 bytes |
+| docker.io/kokuwaio/keycloak:23.0.1-distroless-import | 403.263.428 bytes | 254.603.340 bytes |
+
+- `compressed`: size transfered from registry
+- `uncompressed`: size on disk
+
 ## Develop and testing
 
 Start k3s: `mvn pre-integration-test`