refactor(docker): Add ORT to the image at the end of the build

Add separate build stages to the end of the Dockerfile which add ORT to
the images. This allows to build images which contain only the tools,
but not ORT itself, which is useful when building the Docker image for
the functional tests where ORT is not required.

Signed-off-by: Martin Nonnenmacher <martin.nonnenmacher@bosch.com>

Dockerfile

@@ -449,8 +449,8 @@ FROM scratch AS ortbin
 COPY --from=ortbuild /opt/ort /opt/ort
 
 #------------------------------------------------------------------------
-# Minimal Runtime container
-FROM base as minimal
+# Container with minimal selection of supported package managers.
+FROM base as minimal-tools
 
 # Remove ort build scripts
 RUN [ -d /etc/scripts ] && sudo rm -rf /etc/scripts
@@ -499,21 +499,9 @@ ENV PATH=$PATH:$RBENV_ROOT/bin:$RBENV_ROOT/shims:$RBENV_ROOT/plugins/ruby-instal
 COPY --from=ruby --chown=$USER:$USER $RBENV_ROOT $RBENV_ROOT
 RUN syft $RBENV_ROOT -o spdx-json --output json=/usr/share/doc/ort/ort-ruby.spdx.json
 
-# ORT
-COPY --from=ortbin --chown=$USER:$USER /opt/ort /opt/ort
-ENV PATH=$PATH:/opt/ort/bin
-
-USER $USER
-WORKDIR $HOME
-
-# Ensure that the ORT data directory exists to be able to mount the config into it with correct permissions.
-RUN mkdir -p "$HOME/.ort"
-
-ENTRYPOINT ["/opt/ort/bin/ort"]
-
 #------------------------------------------------------------------------
-# Full Runtime container
-FROM minimal as run
+# Container with all supported package managers.
+FROM minimal-tools as all-tools
 
 # Repo and Android
 ENV ANDROID_HOME=/opt/android-sdk
@@ -589,3 +577,35 @@ ENV PATH=$PATH:$BAZEL_HOME/bin
 COPY --from=bazel $BAZEL_HOME $BAZEL_HOME
 
 RUN syft $BAZEL_HOME -o spdx-json --output json=/usr/share/doc/ort/ort-bazel.spdx.json
+
+#------------------------------------------------------------------------
+# Runtime container with minimal selection of supported package managers pre-installed.
+FROM minimal-tools as minimal
+
+# ORT
+COPY --from=ortbin --chown=$USER:$USER /opt/ort /opt/ort
+ENV PATH=$PATH:/opt/ort/bin
+
+USER $USER
+WORKDIR $HOME
+
+# Ensure that the ORT data directory exists to be able to mount the config into it with correct permissions.
+RUN mkdir -p "$HOME/.ort"
+
+ENTRYPOINT ["/opt/ort/bin/ort"]
+
+#------------------------------------------------------------------------
+# Runtime container with all supported package managers pre-installed.
+FROM all-tools as run
+
+# ORT
+COPY --from=ortbin --chown=$USER:$USER /opt/ort /opt/ort
+ENV PATH=$PATH:/opt/ort/bin
+
+USER $USER
+WORKDIR $HOME
+
+# Ensure that the ORT data directory exists to be able to mount the config into it with correct permissions.
+RUN mkdir -p "$HOME/.ort"
+
+ENTRYPOINT ["/opt/ort/bin/ort"]