Solr 8.11.2 update (#244)

* Update Dockerfile

* Add info for switch Solr versions

* Add new line after header

* Switching out ENV for ARG

* Switching out ENV for ARG

* Add a newline

* Remove "Solr keys" ref

* Solr 8.11.2 requires GNU ps to start correctly.

Co-authored-by: Nigel Banks <[email protected]>

solr/Dockerfile

@@ -1,10 +1,11 @@
 # syntax=docker/dockerfile:1.2.1
 ARG repository=local
 ARG tag=latest
+ARG alpine=3.15.0
 FROM --platform=$BUILDPLATFORM ${repository}/download:${tag} AS download
 
-ARG SOLR_VERSION="7.1.0"
-ARG SOLR_FILE_SHA256="5cd25cc2634e47efbb529658d6ddd406a7cd1b211affa26563a28db2d80b8133"
+ARG SOLR_VERSION="8.11.2"
+ARG SOLR_FILE_SHA256="54d6ebd392942f0798a60d50a910e26794b2c344ee97c2d9b50e678a7066d3a6"
 
 RUN --mount=type=cache,id=solr-downloads,sharing=locked,target=/opt/downloads \
     SOLR_FILE="solr-${SOLR_VERSION}.tgz" && \
@@ -15,6 +16,7 @@ RUN --mount=type=cache,id=solr-downloads,sharing=locked,target=/opt/downloads \
         --file "${DOWNLOAD_CACHE_DIRECTORY}/${SOLR_FILE}" \
         docs example licenses server/solr/configsets
 
+FROM alpine:${alpine} AS cache
 FROM ${repository}/java:${tag}
 
 EXPOSE 8983
@@ -31,6 +33,10 @@ COPY --from=download /etc/passwd /etc/passwd
 COPY --from=download /etc/shadow /etc/shadow
 COPY --from=download --chown=solr:solr /opt/solr /opt/solr
 
+# Solr requires GNU ps.
+RUN --mount=type=cache,id=solr-apk,sharing=locked,from=cache,target=/var/cache/apk \
+    apk add procps
+
 COPY rootfs /
 
 WORKDIR /opt/solr

solr/README.md

@@ -1,6 +1,6 @@
 # Solr
 
-Docker image for [Solr] version 7.1.0.
+Docker image for [Solr] version 8.11.2.
 
 Please refer to the [Solr Documentation] for more in-depth information.
 
@@ -45,3 +45,26 @@ additional settings, volumes, ports, etc.
 [Solr Documentation]: https://lucene.apache.org/solr/guide/7_1/
 [Solr Logging]: https://lucene.apache.org/solr/guide/7_1/configuring-logging.html
 [Solr]: https://lucene.apache.org/solr/
+
+## Changing versions
+
+There is 2 values you need to update/change the version. 
+
+1. Solr version: found at [archive.apache.org](https://archive.apache.org/dist/lucene/solr)
+1. SOLR_FILE_SHA256: sha256sum of the tgz file
+
+```dockerfile
+ARG SOLR_VERSION="8.11.2"
+ARG SOLR_FILE_SHA256="54d6ebd392942f0798a60d50a910e26794b2c344ee97c2d9b50e678a7066d3a6"
+```
+
+Go to [archive.apache.org](https://archive.apache.org/dist/lucene/solr) and find the version you want. There will be several files but the one to use have the following naming convention.
+
+* solr-${SOLR_VERSION}.tgz
+
+Download the two files and run and replace the _1.1.1_ with the version you have.
+
+```bash
+# This outputs the value to use for $SOLR_FILE_SHA256.
+sha256sum solr-1.1.1.tgz
+```