update Dockerfile to reference TARGETARCH for build selection

.github/workflows/build.yml

@@ -29,8 +29,7 @@ env:
   CURL_CACHE_DIR: ~/.cache/curl
   IMAGE_NAME: cisagov/con-pca-tasks
   PIP_CACHE_DIR: ~/.cache/pip
-  PLATFORMS: "linux/amd64,linux/arm/v6,linux/arm/v7,\
-  linux/arm64,linux/ppc64le,linux/s390x"
+  PLATFORMS: "linux/amd64,linux/arm64"
   PRE_COMMIT_CACHE_DIR: ~/.cache/pre-commit
   RUN_TMATE: ${{ secrets.RUN_TMATE }}
 
@@ -262,27 +261,27 @@ jobs:
           # https://github.com/opencontainers/image-spec/blob/master/annotations.md
           labels: "\
             org.opencontainers.image.created=${{
-              needs.prepare.outputs.created }}
+            needs.prepare.outputs.created }}
 
             org.opencontainers.image.description=${{
-              fromJson(needs.prepare.outputs.repometa).description }}
+            fromJson(needs.prepare.outputs.repometa).description }}
 
             org.opencontainers.image.licenses=${{
-              fromJson(needs.prepare.outputs.repometa).license.spdx_id }}
+            fromJson(needs.prepare.outputs.repometa).license.spdx_id }}
 
             org.opencontainers.image.revision=${{ github.sha }}
 
             org.opencontainers.image.source=${{
-              fromJson(needs.prepare.outputs.repometa).clone_url }}
+            fromJson(needs.prepare.outputs.repometa).clone_url }}
 
             org.opencontainers.image.title=${{
-              fromJson(needs.prepare.outputs.repometa).name }}
+            fromJson(needs.prepare.outputs.repometa).name }}
 
             org.opencontainers.image.url=${{
-              fromJson(needs.prepare.outputs.repometa).html_url }}
+            fromJson(needs.prepare.outputs.repometa).html_url }}
 
             org.opencontainers.image.version=${{
-              needs.prepare.outputs.source_version }}"
+            needs.prepare.outputs.source_version }}"
       - name: Compress image
         run: gzip dist/image.tar
       - name: Upload artifacts
@@ -391,27 +390,27 @@ jobs:
           # https://github.com/opencontainers/image-spec/blob/master/annotations.md
           labels: "\
             org.opencontainers.image.created=${{
-              needs.prepare.outputs.created }}
+            needs.prepare.outputs.created }}
 
             org.opencontainers.image.description=${{
-              fromJson(needs.prepare.outputs.repometa).description }}
+            fromJson(needs.prepare.outputs.repometa).description }}
 
             org.opencontainers.image.licenses=${{
-              fromJson(needs.prepare.outputs.repometa).license.spdx_id }}
+            fromJson(needs.prepare.outputs.repometa).license.spdx_id }}
 
             org.opencontainers.image.revision=${{ github.sha }}
 
             org.opencontainers.image.source=${{
-              fromJson(needs.prepare.outputs.repometa).clone_url }}
+            fromJson(needs.prepare.outputs.repometa).clone_url }}
 
             org.opencontainers.image.title=${{
-              fromJson(needs.prepare.outputs.repometa).name }}
+            fromJson(needs.prepare.outputs.repometa).name }}
 
             org.opencontainers.image.url=${{
-              fromJson(needs.prepare.outputs.repometa).html_url }}
+            fromJson(needs.prepare.outputs.repometa).html_url }}
 
             org.opencontainers.image.version=${{
-              needs.prepare.outputs.source_version }}"
+            needs.prepare.outputs.source_version }}"
       - name: Publish README.md to Docker Hub
         env:
           DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}

Dockerfile

@@ -13,6 +13,9 @@ ARG VERSION
 LABEL org.opencontainers.image.authors="mostafa.abdelbaky@inl.gov"
 LABEL org.opencontainers.image.vendor="Cybersecurity and Infrastructure Security Agency"
 
+# This argument is automatically set by the --platform flag
+ARG TARGETARCH
+
 ###
 # Unprivileged user setup variables
 ###
@@ -53,8 +56,8 @@ ENV DEPS \
 RUN apk --no-cache --quiet add ${DEPS}
 
 # Install Con-PCA-Tasks binary file
-RUN wget https://github.com/cisagov/con-pca-tasks/releases/download/v0.0.1/pca-linux-amd64
-RUN mv pca-linux-amd64 /bin/pca
+RUN wget https://github.com/cisagov/con-pca-tasks/releases/download/v0.0.1/pca-linux-${TARGETARCH}
+RUN mv pca-linux-${TARGETARCH} /bin/pca
 
 RUN ["chmod", "+x", "/bin/pca"]
 USER ${CISA_USER}