docs: add deprecation notice.

README.md

@@ -1,21 +1,17 @@
 # concourse-buildkit
 
-A docker image to build multiarch images on [concourse](https://concourse-ci.org)
-since buildx is flakey for me.
+**DEPRECATED: this resource is no longer needed, the concourse build
+task in combination with the registry-image can build and push multiarch
+images now.**
 
-Currently only the docker registry is supported.
+A docker image to build multiarch images on [concourse](https://concourse-ci.org).
 
 ## parameters
 
-- repository: Required. The repository of the image.
-- tag: Optional. The tag for the image, default: `latest`
-- additional_tags: Optional. Path to a file containing one additional tag per line.
-- push: Optional. Should the built image be pushed, default: `false`
+- dest: Required. The output path for the oci image.
 - platform: Optional. A comma seperated list of target platforms, default: current platform
 - context: The context with which to build.
 - manual: Optional. Don't use params and instead supply all arguments via the command line, default: `false`
-- username: Optional. The username used to log into the registry.
-- password: Optional. The password used to log into the registry.
 
 ## Example
 

ci/pipeline.yml

@@ -8,6 +8,7 @@ resources:
     fetch_tags: true
 - name: upstream-image
   type: registry-image
+  check_every: 6h
   source:
     repository: moby/buildkit
 
@@ -48,6 +49,7 @@ jobs:
         type: registry-image
         source:
           repository: redxef/concourse-buildkit
+          tag: v0.2.1
       inputs:
       - name: source
         path: .

entrypoint.sh

@@ -1,15 +1,5 @@
 #!/usr/bin/env sh
 
-DEFAULT_DOMAIN=docker.io
-LEGACY_DEFAULT_DOMAIN=index.docker.io
-DOCKER_LOGIN_FILE_TMPL='{
-    "auths": {
-        "{{REGISTRY_URL}}": {
-            "auth": "{{BASE64_UNAME_PW}}"
-        }
-    }
-}'
-
 fail() {
     echo "Error:" "$@" 1>&2
     exit 1
@@ -20,58 +10,13 @@ echo_and_run() {
     "$@"
 }
 
-docker_login() {
-    login_name="$1"
-    if [ -z "$login_name" ]; then
-        login_name="$DEFAULT_DOMAIN"
-    fi
-    if [ "$login_name" = "$DEFAULT_DOMAIN" ]; then
-        login_name="$LEGACY_DEFAULT_DOMAIN/v1/"
-    fi
-    login_name="https://$login_name"
-    # TODO: detect registry url
-    mkdir -p "$HOME/.docker"
-    echo "$DOCKER_LOGIN_FILE_TMPL" | \
-        sed -e "s|{{BASE64_UNAME_PW}}|$(printf '%s:%s' "$username" "$password" | base64)|g" \
-            -e "s|{{REGISTRY_URL}}|$login_name|g" \
-        > "$HOME/.docker/config.json"
-}
-
 plain() {
     buildctl-daemonless.sh "$@"
 }
 
-split_repo_domain() {
-    domain_part="$(echo "$1" | sed -n 's|^\([^/]*\)/.*$|\1|p')"
-    other_part="$(echo "$1" | sed -n "s|^$domain_part/\?\(.*\)$|\1|p")"
-
-    if [ -z "$domain_part" ]; then
-        domain_part="$DEFAULT_DOMAIN"
-        other_part="$other_part"
-    elif echo "$domain_part" | grep -Evq '\.|:' && [ "$domain_part" != 'localhost' ]; then
-        # ^ docker sourcecode checks if $domain_part == $domain_part.lower() in effect checking if all is lower case
-        domain_part="$DEFAULT_DOMAIN"
-        other_part="$1" # we deviate here from the reference docker implementation
-    fi
-    if [ "$domain_part" = "$LEGACY_DEFAULT_DOMAIN" ]; then
-        domain_part="$DEFAULT_DOMAIN"
-    fi
-    if [ "$domain_part" = "$DEFAULT_DOMAIN" ] && echo "$other_part" | grep -vq /; then
-        other_part="library/$other_part"
-    fi
-    echo "$domain_part"
-    echo "$other_part"
-}
-
 build() {
-    if [ -z "$repository" ]; then
-        fail "missing argument: repository"
-    fi
-    if [ -z "$tag" ]; then
-        tag=latest
-    fi
-    if [ -z "$push" ]; then
-        push=false
+    if [ -z "$dest" ]; then
+        fail "missing argument: dest"
     fi
     if [ -z "$context" ]; then
         context=.
@@ -82,36 +27,15 @@ build() {
         platform="--opt platform=$platform"
     fi
 
-    final_tag="$repository:$tag"
-    if [ -n "$additional_tags" ]; then
-        while read -r line; do
-            if [ -z "$line" ]; then
-                continue
-            fi
-            final_tag="$repository:$line,$final_tag"
-        done < "$additional_tags"
-    fi
-
     echo_and_run buildctl-daemonless.sh \
         build \
         --frontend dockerfile.v0 \
         --local context="$context" \
         --local dockerfile="$context" \
         $platform \
-        --output type=image,\"name="$final_tag"\",push="$push"
+        --output type=oci,dest="$dest"
 }
 
-if [ -n "$username" ]; then
-    if [ -z "$password" ]; then
-        fail "need to also give password when logging in"
-    fi
-    if [ -z "$repository" ]; then
-        docker_login ''
-    else
-        docker_login "$(split_repo_domain "$repository" | head -n1)"
-    fi
-fi
-
 if [ -z "$manual" ]; then
     manual=false
 fi