Remove outdated Debian images (#62)

* From now on, we shall only use Centos release image

The binaries work fine on all platforms with at least the given glibc
version.

* Update versions in README to be more correct

---------

Co-authored-by: Alexey Orlenko <[email protected]>

.buildkite/pipeline.sh

@@ -3,11 +3,7 @@
 if [[ "$BUILDKITE_BRANCH" == "main" ]]; then
     # Build & push images
     echo "steps:
-    # - label: \":debian: Debian build images\"
-    #   command: cd debian && make build && make push
-    #   branches: main
-
-    - label: \":rhel: RHEL build images\"
+    - label: \":linux: Glibc build images\"
       command: cd rhel && make build && make push
       branches: main
 
@@ -42,10 +38,7 @@ if [[ "$BUILDKITE_BRANCH" == "main" ]]; then
 else
     # Only build images
     echo "steps:
-    # - label: \":debian: Debian build images\"
-    #   command: cd debian && make build
-
-    - label: \":rhel: RHEL build images\"
+    - label: \":linux: Glibc build images\"
       command: cd rhel && make build
 
     - label: \":linux: Musl build images\"

README.md

@@ -11,8 +11,7 @@ Images are based on the lowest common denominator of glibc and OpenSSL. In pract
 ## Images
 
 ### Build
-- **Debian**: Debian-based (Jessie) build images for OpenSSL 1.0.1 and 1.1.0 and glibc 2.19. Usable for all debian derivatives (Ubuntu, Mint, etc.) and Arch Linux.
-- **RHEL**: CentOS-based build images for OpenSSL 1.0.1 and 1.1.0 and glibc 2.19. Usable for all RHEL derivatives (RedHat, CentOS, Amazon Linux, etc.).
+- **RHEL**: CentOS-based build images for OpenSSL 1.0.2, 1.1.1 and 3.0, and glibc 2.17. Usable for all linux distros with at least the given glibc version (RedHat, CentOS, Amazon Linux, Debian, Ubuntu, Arch Linux, etc.).
 - **Cross**: Cross compilation images, currently for Windows GNU, MacOS and Linux ARM cross compilation.
 - **Test**: Test base image for CI. Contains all dependencies to run the connector test kit and cargo tests.
 - **Release**: Debian-based (Bullseye) image responsible for computing checksums and GPG signatures as part of the Prisma release process.