minisign: install using binaries to support arm64

The docker images is not available for arm64. This commit moves to the
release package from GitHub that ships with the binaries for amd64 and
arm64

base/Dockerfile

@@ -1,6 +1,3 @@
-# minisign is needed to verify the zig download
-FROM jedisct1/minisign AS minisign
-
 FROM debian:bookworm-slim AS base
 
 ENV GO_VERSION=1.23.5
@@ -10,6 +7,7 @@ ENV ZIG_VERSION=0.13.0
 ENV ZIG_MINISIGN_KEY="RWSGOq2NVecA2UPNdBUZykf1CCb147pkmdtYxgb3Ti+JO/wCYvhbAb/U"
 ENV FYNE_VERSION=v2.5.3
 ENV FIXUID_VERSION=0.5.1
+ENV MINISIGN_VERSION=0.12
 
 # Install common dependencies
 
@@ -62,36 +60,41 @@ WORKDIR $GOPATH
 # https://github.com/docker-library/golang/issues/472
 ENV GOTOOLCHAIN=local
 
-# Install Zig
-
-# copy minisign
-COPY --from=minisign /usr/local/bin/minisign /usr/local/bin/minisign
+# Install minisign
+RUN set -eux; \
+    curl -sSL https://github.com/jedisct1/minisign/releases/download/${MINISIGN_VERSION}/minisign-${MINISIGN_VERSION}-linux.tar.gz -o minisign.tgz; \
+    mkdir -p /usr/local/minisign; ls -l;\
+    tar -C /usr/local/minisign --strip-components=1 -zxvf minisign.tgz; \
+    rm minisign.tgz
 
+# Install Zig
 RUN set -eux; \
     arch="$(dpkg --print-architecture)"; \
     url=; \
     public_key=${ZIG_MINISIGN_KEY}; \
     case "$arch" in \
         'amd64') \
+            arch="x86_64";\
             # dev release
-            # url="https://ziglang.org/builds/zig-linux-x86_64-${ZIG_VERSION}.tar.xz";\
+            # url="https://ziglang.org/builds/zig-linux-${arch}-${ZIG_VERSION}.tar.xz";\
             # stable release
-            url="https://ziglang.org/download/${ZIG_VERSION}/zig-linux-x86_64-${ZIG_VERSION}.tar.xz";\
+            url="https://ziglang.org/download/${ZIG_VERSION}/zig-linux-${arch}-${ZIG_VERSION}.tar.xz";\
             ;; \
         'arm64') \
+            arch="aarch64";\
             # dev release
-            #url="https://ziglang.org/builds/zig-linux-aarch64-${ZIG_VERSION}.tar.xz";\
+            #url="https://ziglang.org/builds/zig-linux-${arch}-${ZIG_VERSION}.tar.xz";\
             # stable release
-            url="https://ziglang.org/download/${ZIG_VERSION}/zig-linux-aarch64-${ZIG_VERSION}.tar.xz";\
+            url="https://ziglang.org/download/${ZIG_VERSION}/zig-linux-${arch}-${ZIG_VERSION}.tar.xz";\
             ;; \
         *) echo >&2 "error: unsupported architecture '$arch'"; exit 1 ;; \
     esac; \
     curl -sSL ${url} -o zig.tar.xz; \
     curl -sSL ${url}.minisig -o zig.tar.xz.minisig; \
-    minisign -Vm zig.tar.xz -P ${public_key}; \
+    /usr/local/minisign/${arch}/minisign -Vm zig.tar.xz -P ${public_key}; \
     tar -C /usr/local -Jxvf zig.tar.xz; \
     mv /usr/local/zig-* /usr/local/zig; \
-    rm zig.tar.xz; \
+    rm zig.tar*; \
     zig version;
 
 ##################################################################

darwin/Dockerfile

@@ -16,18 +16,20 @@ RUN set -eux; \
     public_key=${ZIG_MINISIGN_KEY}; \
     case "$arch" in \
         'amd64') \
-            url="https://ziglang.org/download/${ZIG_VERSION}/zig-linux-x86_64-${ZIG_VERSION}.tar.xz";\
+            arch="x86_64";\
+            url="https://ziglang.org/download/${ZIG_VERSION}/zig-linux-${arch}-${ZIG_VERSION}.tar.xz";\
             ;; \
         'arm64') \
-            url="https://ziglang.org/download/${ZIG_VERSION}/zig-linux-aarch64-${ZIG_VERSION}.tar.xz";\
+            arch="aarch64";\
+            url="https://ziglang.org/download/${ZIG_VERSION}/zig-linux-${arch}-${ZIG_VERSION}.tar.xz";\
             ;; \
         *) echo >&2 "error: unsupported architecture '$arch'"; exit 1 ;; \
     esac; \
     curl -sSL ${url} -o zig.tar.xz; \
     curl -sSL ${url}.minisig -o zig.tar.xz.minisig; \
-    minisign -Vm zig.tar.xz -P ${public_key}; \
+    /usr/local/minisign/${arch}/minisign -Vm zig.tar.xz -P ${public_key}; \
     tar -C /usr/local -Jxvf zig.tar.xz; \
     mv /usr/local/zig-* /usr/local/zig; \
-    rm zig.tar.xz; \
+    rm zig.tar*; \
     zig version;