tests: Switch test to alpine:3.7

Some testis explicitly use alpine:3.6 and alpine:3.5 to run
some shell scripts. Switch them to alpine:3.7 like the
rest of the packages and tools.

Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>

test/cases/020_kernel/010_kmod_4.4.x/Dockerfile

@@ -17,7 +17,7 @@ COPY ./src/* ./
 RUN make all
 
 # Package
-FROM alpine:3.5
+FROM alpine:3.7
 COPY --from=build /kmod/hello_world.ko /
 COPY check.sh /check.sh
 ENTRYPOINT ["/bin/sh", "/check.sh"]

test/cases/020_kernel/011_kmod_4.9.x/Dockerfile

@@ -17,7 +17,7 @@ COPY ./src/* ./
 RUN make all
 
 # Package
-FROM alpine:3.5
+FROM alpine:3.7
 COPY --from=build /kmod/hello_world.ko /
 COPY check.sh /check.sh
 ENTRYPOINT ["/bin/sh", "/check.sh"]

test/cases/020_kernel/016_kmod_4.14.x/Dockerfile

@@ -17,7 +17,7 @@ COPY ./src/* ./
 RUN make all
 
 # Package
-FROM alpine:3.5
+FROM alpine:3.7
 COPY --from=build /kmod/hello_world.ko /
 COPY check.sh /check.sh
 ENTRYPOINT ["/bin/sh", "/check.sh"]

test/cases/030_security/010_ports/test.yml

@@ -6,7 +6,7 @@ init:
   - linuxkit/runc:abc3f292653e64a2fd488e9675ace19a55ec7023
 onboot:
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     readonly: true
     binds:
       - /check.sh:/check.sh

test/cases/040_packages/002_binfmt/test.yml

@@ -8,7 +8,7 @@ onboot:
   - name: binfmt
     image: linuxkit/binfmt:4b1d7a8dab03c09855fb4b6060a42b2294674b47
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     binds:
       - /check.sh:/check.sh
       - /proc/sys/fs/binfmt_misc:/binfmt_misc
@@ -23,4 +23,4 @@ trust:
   org:
     - linuxkit
   image:
-    - alpine:3.6
+    - alpine:3.7

test/cases/040_packages/003_ca-certificates/test.yml

@@ -7,7 +7,7 @@ init:
   - linuxkit/ca-certificates:de21b84d9b055ad9dcecc57965b654a7a24ef8e0
 onboot:
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     binds:
       - /check.sh:/check.sh
       - /etc:/host-etc
@@ -22,4 +22,4 @@ trust:
   org:
     - linuxkit
   image:
-    - alpine:3.6
+    - alpine:3.7

test/cases/040_packages/004_dhcpcd/test.yml

@@ -9,7 +9,7 @@ onboot:
     image: linuxkit/dhcpcd:0d59a6cc03412289ef4313f2491ec666c1715cc9
     command: ["/sbin/dhcpcd", "--nobackground", "-f", "/dhcpcd.conf", "-1"]
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     net: host
     binds:
       - /check.sh:/check.sh
@@ -24,4 +24,4 @@ trust:
   org:
     - linuxkit
   image:
-    - alpine:3.6
+    - alpine:3.7

test/cases/040_packages/005_extend/000_ext4/test-create.yml

@@ -11,7 +11,7 @@ onboot:
     image: linuxkit/mount:b346ec277b7074e5c9986128a879c10a1d18742b
     command: ["/usr/bin/mountie", "/var/lib/docker"]
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     binds:
       - /var/lib/docker:/var/lib/docker
     command: ["touch", "/var/lib/docker/bar"]

test/cases/040_packages/005_extend/000_ext4/test.yml

@@ -11,7 +11,7 @@ onboot:
     image: linuxkit/mount:b346ec277b7074e5c9986128a879c10a1d18742b
     command: ["/usr/bin/mountie", "/var/lib/docker"]
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     binds:
       - /var/lib/docker:/var/lib/docker
       - /check.sh:/check.sh

test/cases/040_packages/005_extend/001_btrfs/test-create.yml

@@ -15,7 +15,7 @@ onboot:
     image: linuxkit/mount:b346ec277b7074e5c9986128a879c10a1d18742b
     command: ["/usr/bin/mountie", "/var/lib/docker"]
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     binds:
       - /var/lib/docker:/var/lib/docker
     command: ["touch", "/var/lib/docker/bar"]

test/cases/040_packages/005_extend/001_btrfs/test.yml

@@ -15,7 +15,7 @@ onboot:
     image: linuxkit/mount:b346ec277b7074e5c9986128a879c10a1d18742b
     command: ["/usr/bin/mountie", "/var/lib/docker"]
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     binds:
       - /var/lib/docker:/var/lib/docker
       - /check.sh:/check.sh

test/cases/040_packages/005_extend/002_xfs/test-create.yml

@@ -12,7 +12,7 @@ onboot:
     image: linuxkit/mount:b346ec277b7074e5c9986128a879c10a1d18742b
     command: ["/usr/bin/mountie", "/var/lib/docker"]
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     binds:
       - /var/lib/docker:/var/lib/docker
     command: ["touch", "/var/lib/docker/bar"]

test/cases/040_packages/005_extend/002_xfs/test.yml

@@ -12,7 +12,7 @@ onboot:
     image: linuxkit/mount:b346ec277b7074e5c9986128a879c10a1d18742b
     command: ["/usr/bin/mountie", "/var/lib/docker"]
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     binds:
       - /var/lib/docker:/var/lib/docker
       - /check.sh:/check.sh

test/cases/040_packages/006_format_mount/000_auto/test.yml

@@ -12,7 +12,7 @@ onboot:
     image: linuxkit/mount:b346ec277b7074e5c9986128a879c10a1d18742b
     command: ["/usr/bin/mountie", "/var/lib/docker"]
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     binds:
       - /var/lib/docker:/var/lib/docker
       - /check.sh:/check.sh

test/cases/040_packages/006_format_mount/001_by_label/test.yml

@@ -12,7 +12,7 @@ onboot:
     image: linuxkit/mount:b346ec277b7074e5c9986128a879c10a1d18742b
     command: ["/usr/bin/mountie", "-label", "docker", "/var/lib/docker"]
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     binds:
       - /var/lib/docker:/var/lib/docker 
       - /check.sh:/check.sh

test/cases/040_packages/006_format_mount/002_by_name/test.yml.in

@@ -12,7 +12,7 @@ onboot:
     image: linuxkit/mount:b346ec277b7074e5c9986128a879c10a1d18742b
     command: ["/usr/bin/mountie", "-device", "@DEVICE@1", "/var/lib/docker"]
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     binds:
       - /var/lib/docker:/var/lib/docker
       - /check.sh:/check.sh

test/cases/040_packages/006_format_mount/003_btrfs/test.yml

@@ -15,7 +15,7 @@ onboot:
     image: linuxkit/mount:b346ec277b7074e5c9986128a879c10a1d18742b
     command: ["/usr/bin/mountie", "/var/lib/docker"]
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     binds:
       - /var/lib/docker:/var/lib/docker
       - /check.sh:/check.sh

test/cases/040_packages/006_format_mount/004_xfs/test.yml

@@ -12,7 +12,7 @@ onboot:
     image: linuxkit/mount:b346ec277b7074e5c9986128a879c10a1d18742b
     command: ["/usr/bin/mountie", "/var/lib/docker"]
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     binds:
       - /var/lib/docker:/var/lib/docker
       - /check.sh:/check.sh

test/cases/040_packages/006_format_mount/010_multiple/test.yml

@@ -18,7 +18,7 @@ onboot:
     image: linuxkit/mount:b346ec277b7074e5c9986128a879c10a1d18742b
     command: ["/usr/bin/mountie", "-label", "foo", "/var/foo"]
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     binds:
       - /var/lib/docker:/var/lib/docker
       - /var/foo:/var/foo

test/cases/040_packages/019_sysctl/test.yml

@@ -8,7 +8,7 @@ onboot:
   - name: sysctl
     image: linuxkit/sysctl:ce3bde5118a41092f1b7048c85d14fb35237ed45
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     net: host
     pid: host
     ipc: host
@@ -25,4 +25,4 @@ trust:
   org:
     - linuxkit
   image:
-    - alpine:3.6
+    - alpine:3.7

test/cases/040_packages/023_wireguard/test.yml

@@ -38,7 +38,7 @@ onboot:
           net: /run/netns/wg1
 onshutdown:
   - name: test2
-    image: alpine:3.6
+    image: alpine:3.7
     binds:
       - /tmp:/tmp
       - /check.sh:/check.sh
@@ -54,7 +54,7 @@ services:
      - CAP_SETGID
      - CAP_DAC_OVERRIDE
   - name: test
-    image: alpine:3.6
+    image: alpine:3.7
     net: /run/netns/wg1
     pid: host
     capabilities: