upgrade earthly to 0.6.8

Author: andyli

.devcontainer/docker-compose.yml

@@ -18,7 +18,7 @@ services:
     extra_hosts:
       - "host.docker.internal:host-gateway"
   earthly:
-    image: earthly/buildkitd:v0.6.4
+    image: earthly/buildkitd:v0.6.8
     privileged: true
     environment:
       - BUILDKIT_TCP_TRANSPORT_ENABLED=true

Earthfile

@@ -4,7 +4,7 @@ ARG WORKDIR=/workspace
 RUN mkdir -m 777 "/workspace"
 WORKDIR $WORKDIR
 
-ARG --required TARGETARCH
+ARG TARGETARCH
 
 ARG USERNAME=vscode
 ARG USER_UID=1000
@@ -30,7 +30,7 @@ github-src:
 # RUN earthly bootstrap --no-buildkit --with-autocomplete
 earthly:
     FROM +devcontainer-base
-    RUN curl -fsSL https://github.com/earthly/earthly/releases/download/v0.6.4/earthly-linux-${TARGETARCH} -o /usr/local/bin/earthly \
+    RUN curl -fsSL https://github.com/earthly/earthly/releases/download/v0.6.8/earthly-linux-${TARGETARCH} -o /usr/local/bin/earthly \
         && chmod +x /usr/local/bin/earthly
     SAVE ARTIFACT /usr/local/bin/earthly